diff --git a/application/pom.xml b/application/pom.xml
index d97f6d92e3..e13605f292 100644
--- a/application/pom.xml
+++ b/application/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>application</artifactId>
diff --git a/common/actor/pom.xml b/common/actor/pom.xml
index 9b0053e0b6..05e770888c 100644
--- a/common/actor/pom.xml
+++ b/common/actor/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/cache/pom.xml b/common/cache/pom.xml
index fd9802a689..d97b41fed4 100644
--- a/common/cache/pom.xml
+++ b/common/cache/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/cluster-api/pom.xml b/common/cluster-api/pom.xml
index d53ac4904d..d789732519 100644
--- a/common/cluster-api/pom.xml
+++ b/common/cluster-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/coap-server/pom.xml b/common/coap-server/pom.xml
index 30001c929d..9bd3fc19d0 100644
--- a/common/coap-server/pom.xml
+++ b/common/coap-server/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/dao-api/pom.xml b/common/dao-api/pom.xml
index 0bd0f476ec..0a84902178 100644
--- a/common/dao-api/pom.xml
+++ b/common/dao-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/data/pom.xml b/common/data/pom.xml
index f7c559c728..6e3d66413a 100644
--- a/common/data/pom.xml
+++ b/common/data/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/edge-api/pom.xml b/common/edge-api/pom.xml
index 4f0fe5aac0..e78dff790d 100644
--- a/common/edge-api/pom.xml
+++ b/common/edge-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/message/pom.xml b/common/message/pom.xml
index 0e290d1e01..53fbdf97c4 100644
--- a/common/message/pom.xml
+++ b/common/message/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/pom.xml b/common/pom.xml
index 4c8f56cbce..9303be4522 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>common</artifactId>
diff --git a/common/proto/pom.xml b/common/proto/pom.xml
index 9a9b262d82..215fe27745 100644
--- a/common/proto/pom.xml
+++ b/common/proto/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/queue/pom.xml b/common/queue/pom.xml
index 44e2239e05..9f895986dd 100644
--- a/common/queue/pom.xml
+++ b/common/queue/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/script/pom.xml b/common/script/pom.xml
index 8c4ea360cf..d2a7a8bfcf 100644
--- a/common/script/pom.xml
+++ b/common/script/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/script/remote-js-client/pom.xml b/common/script/remote-js-client/pom.xml
index 2b780bf489..8aacb3bc59 100644
--- a/common/script/remote-js-client/pom.xml
+++ b/common/script/remote-js-client/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>script</artifactId>
     </parent>
     <groupId>org.thingsboard.common.script</groupId>
diff --git a/common/script/script-api/pom.xml b/common/script/script-api/pom.xml
index ed93701513..f30adc303a 100644
--- a/common/script/script-api/pom.xml
+++ b/common/script/script-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>script</artifactId>
     </parent>
     <groupId>org.thingsboard.common.script</groupId>
diff --git a/common/stats/pom.xml b/common/stats/pom.xml
index 7cc67d5821..4a23faf475 100644
--- a/common/stats/pom.xml
+++ b/common/stats/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/transport/coap/pom.xml b/common/transport/coap/pom.xml
index 86459e9821..dc5ecd7905 100644
--- a/common/transport/coap/pom.xml
+++ b/common/transport/coap/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/http/pom.xml b/common/transport/http/pom.xml
index 8ab2243ceb..bfb830d8ee 100644
--- a/common/transport/http/pom.xml
+++ b/common/transport/http/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/lwm2m/pom.xml b/common/transport/lwm2m/pom.xml
index a6e7209f21..d5603a86ca 100644
--- a/common/transport/lwm2m/pom.xml
+++ b/common/transport/lwm2m/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/mqtt/pom.xml b/common/transport/mqtt/pom.xml
index d074afc6b5..c043d88e20 100644
--- a/common/transport/mqtt/pom.xml
+++ b/common/transport/mqtt/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/pom.xml b/common/transport/pom.xml
index fdd3ad21d5..01fa1c3c4a 100644
--- a/common/transport/pom.xml
+++ b/common/transport/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/transport/snmp/pom.xml b/common/transport/snmp/pom.xml
index 5d4d37547f..b1a78519d3 100644
--- a/common/transport/snmp/pom.xml
+++ b/common/transport/snmp/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
 
diff --git a/common/transport/transport-api/pom.xml b/common/transport/transport-api/pom.xml
index e2f03b060a..e05414e77b 100644
--- a/common/transport/transport-api/pom.xml
+++ b/common/transport/transport-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/util/pom.xml b/common/util/pom.xml
index dc75047267..b0543bf7fb 100644
--- a/common/util/pom.xml
+++ b/common/util/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/version-control/pom.xml b/common/version-control/pom.xml
index ea568dfcd9..16559c2e2c 100644
--- a/common/version-control/pom.xml
+++ b/common/version-control/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/dao/pom.xml b/dao/pom.xml
index 5021742154..3dbdd086db 100644
--- a/dao/pom.xml
+++ b/dao/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>dao</artifactId>
diff --git a/monitoring/pom.xml b/monitoring/pom.xml
index d30a9ca71f..3b2f378a17 100644
--- a/monitoring/pom.xml
+++ b/monitoring/pom.xml
@@ -21,7 +21,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
 
diff --git a/msa/black-box-tests/pom.xml b/msa/black-box-tests/pom.xml
index c1c0980b64..549d773297 100644
--- a/msa/black-box-tests/pom.xml
+++ b/msa/black-box-tests/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/js-executor/pom.xml b/msa/js-executor/pom.xml
index 62545f5ad6..8641384cb0 100644
--- a/msa/js-executor/pom.xml
+++ b/msa/js-executor/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/monitoring/pom.xml b/msa/monitoring/pom.xml
index 1b03765586..a58da78c17 100644
--- a/msa/monitoring/pom.xml
+++ b/msa/monitoring/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
 
diff --git a/msa/pom.xml b/msa/pom.xml
index ff394295f4..2ccf92deb3 100644
--- a/msa/pom.xml
+++ b/msa/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>msa</artifactId>
diff --git a/msa/tb-node/pom.xml b/msa/tb-node/pom.xml
index 6142c3c5d8..cc93c0a078 100644
--- a/msa/tb-node/pom.xml
+++ b/msa/tb-node/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/tb/pom.xml b/msa/tb/pom.xml
index 0c6046c09e..dab3a52710 100644
--- a/msa/tb/pom.xml
+++ b/msa/tb/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/transport/coap/pom.xml b/msa/transport/coap/pom.xml
index 325d4d45fa..896915082e 100644
--- a/msa/transport/coap/pom.xml
+++ b/msa/transport/coap/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/http/pom.xml b/msa/transport/http/pom.xml
index 945c523455..483c40c880 100644
--- a/msa/transport/http/pom.xml
+++ b/msa/transport/http/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/lwm2m/pom.xml b/msa/transport/lwm2m/pom.xml
index 4d0370c1cf..db98c0828f 100644
--- a/msa/transport/lwm2m/pom.xml
+++ b/msa/transport/lwm2m/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/mqtt/pom.xml b/msa/transport/mqtt/pom.xml
index 20791ad61c..26d53f6b2f 100644
--- a/msa/transport/mqtt/pom.xml
+++ b/msa/transport/mqtt/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/pom.xml b/msa/transport/pom.xml
index 0b92e1fa97..c9473462d7 100644
--- a/msa/transport/pom.xml
+++ b/msa/transport/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/transport/snmp/pom.xml b/msa/transport/snmp/pom.xml
index b16469523e..7c6f267964 100644
--- a/msa/transport/snmp/pom.xml
+++ b/msa/transport/snmp/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.thingsboard.msa</groupId>
         <artifactId>transport</artifactId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
     </parent>
 
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/vc-executor-docker/pom.xml b/msa/vc-executor-docker/pom.xml
index 72995b05ab..8cba9d153b 100644
--- a/msa/vc-executor-docker/pom.xml
+++ b/msa/vc-executor-docker/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/vc-executor/pom.xml b/msa/vc-executor/pom.xml
index 1b88a41692..5e86f5dd47 100644
--- a/msa/vc-executor/pom.xml
+++ b/msa/vc-executor/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/web-ui/pom.xml b/msa/web-ui/pom.xml
index 361487b516..bfbcb81012 100644
--- a/msa/web-ui/pom.xml
+++ b/msa/web-ui/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/netty-mqtt/pom.xml b/netty-mqtt/pom.xml
index f7361a686d..34a4a3e81a 100644
--- a/netty-mqtt/pom.xml
+++ b/netty-mqtt/pom.xml
@@ -19,11 +19,11 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>netty-mqtt</artifactId>
-    <version>4.0.0-SNAPSHOT</version>
+    <version>3.9.1-RC</version>
     <packaging>jar</packaging>
 
     <name>Netty MQTT Client</name>
diff --git a/pom.xml b/pom.xml
index e70a57fbbf..5d46c743cd 100755
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.thingsboard</groupId>
     <artifactId>thingsboard</artifactId>
-    <version>4.0.0-SNAPSHOT</version>
+    <version>3.9.1-RC</version>
     <packaging>pom</packaging>
 
     <name>Thingsboard</name>
diff --git a/rest-client/pom.xml b/rest-client/pom.xml
index c8232512f7..69cd079e6b 100644
--- a/rest-client/pom.xml
+++ b/rest-client/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>rest-client</artifactId>
diff --git a/rule-engine/pom.xml b/rule-engine/pom.xml
index bd14daf22e..5ed4ee9329 100644
--- a/rule-engine/pom.xml
+++ b/rule-engine/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>rule-engine</artifactId>
diff --git a/rule-engine/rule-engine-api/pom.xml b/rule-engine/rule-engine-api/pom.xml
index 886a2169f3..4db9a7c4bf 100644
--- a/rule-engine/rule-engine-api/pom.xml
+++ b/rule-engine/rule-engine-api/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>rule-engine</artifactId>
     </parent>
     <groupId>org.thingsboard.rule-engine</groupId>
diff --git a/rule-engine/rule-engine-components/pom.xml b/rule-engine/rule-engine-components/pom.xml
index 750701894f..5b48de2224 100644
--- a/rule-engine/rule-engine-components/pom.xml
+++ b/rule-engine/rule-engine-components/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>rule-engine</artifactId>
     </parent>
     <groupId>org.thingsboard.rule-engine</groupId>
diff --git a/tools/pom.xml b/tools/pom.xml
index 4f7c3f48a6..f60289c5f4 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>tools</artifactId>
diff --git a/transport/coap/pom.xml b/transport/coap/pom.xml
index 452ef6ec9a..0b147c871a 100644
--- a/transport/coap/pom.xml
+++ b/transport/coap/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/http/pom.xml b/transport/http/pom.xml
index 2408340792..f8e80627f3 100644
--- a/transport/http/pom.xml
+++ b/transport/http/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/lwm2m/pom.xml b/transport/lwm2m/pom.xml
index 3ba43f5b53..43f61039ed 100644
--- a/transport/lwm2m/pom.xml
+++ b/transport/lwm2m/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/mqtt/pom.xml b/transport/mqtt/pom.xml
index e31d618890..0fea251b03 100644
--- a/transport/mqtt/pom.xml
+++ b/transport/mqtt/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/pom.xml b/transport/pom.xml
index dd1c415e6c..e101a84e79 100644
--- a/transport/pom.xml
+++ b/transport/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>transport</artifactId>
diff --git a/transport/snmp/pom.xml b/transport/snmp/pom.xml
index 08f23d2c2d..26f68cc598 100644
--- a/transport/snmp/pom.xml
+++ b/transport/snmp/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>transport</artifactId>
     </parent>
 
diff --git a/ui-ngx/pom.xml b/ui-ngx/pom.xml
index 9515f3b3ec..b00064e2fd 100644
--- a/ui-ngx/pom.xml
+++ b/ui-ngx/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>4.0.0-SNAPSHOT</version>
+        <version>3.9.1-RC</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <groupId>org.thingsboard</groupId>