diff --git a/google-cloud-pubsub-bom/pom.xml b/google-cloud-pubsub-bom/pom.xml
index d955b0ab5..c2f716f5b 100644
--- a/google-cloud-pubsub-bom/pom.xml
+++ b/google-cloud-pubsub-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub-bom</artifactId>
-  <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -52,17 +52,17 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-pubsub</artifactId>
-        <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+        <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-        <version>1.105.19</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+        <version>1.105.20-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-        <version>1.105.19</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+        <version>1.105.20-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-pubsub/pom.xml b/google-cloud-pubsub/pom.xml
index 7baaec4cb..3bb63bbe0 100644
--- a/google-cloud-pubsub/pom.xml
+++ b/google-cloud-pubsub/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub</artifactId>
-  <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Pub/Sub</name>
   <url>https://github.com/googleapis/java-pubsub</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsub-parent</artifactId>
-    <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-pubsub</site.installationModule>
diff --git a/grpc-google-cloud-pubsub-v1/pom.xml b/grpc-google-cloud-pubsub-v1/pom.xml
index a5e3f436d..73ab117a0 100644
--- a/grpc-google-cloud-pubsub-v1/pom.xml
+++ b/grpc-google-cloud-pubsub-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-  <version>1.105.19</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+  <version>1.105.20-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
   <name>grpc-google-cloud-pubsub-v1</name>
   <description>GRPC library for grpc-google-cloud-pubsub-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsub-parent</artifactId>
-    <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 7c308a1cd..86915bf1b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub-parent</artifactId>
   <packaging>pom</packaging>
-  <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   <name>Google Cloud Pub/Sub Parent</name>
   <url>https://github.com/googleapis/java-pubsub</url>
   <description>
@@ -69,17 +69,17 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-        <version>1.105.19</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+        <version>1.105.20-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-        <version>1.105.19</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+        <version>1.105.20-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-pubsub</artifactId>
-        <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+        <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
       </dependency>
 
       <!-- Test dependencies -->
diff --git a/proto-google-cloud-pubsub-v1/pom.xml b/proto-google-cloud-pubsub-v1/pom.xml
index 358086454..07fd5a36d 100644
--- a/proto-google-cloud-pubsub-v1/pom.xml
+++ b/proto-google-cloud-pubsub-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-  <version>1.105.19</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+  <version>1.105.20-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
   <name>proto-google-cloud-pubsub-v1</name>
   <description>PROTO library for proto-google-cloud-pubsub-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsub-parent</artifactId>
-    <version>1.123.19</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.123.20-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index e204be573..f1cf6fafc 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -43,7 +43,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-pubsub</artifactId>
-      <version>1.123.19</version>
+      <version>1.123.20-SNAPSHOT</version>
     </dependency>
     <!-- {x-version-update-end} -->
 
diff --git a/versions.txt b/versions.txt
index ca059bcef..cda983d01 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-pubsub:1.123.19:1.123.19
-grpc-google-cloud-pubsub-v1:1.105.19:1.105.19
-proto-google-cloud-pubsub-v1:1.105.19:1.105.19
+google-cloud-pubsub:1.123.19:1.123.20-SNAPSHOT
+grpc-google-cloud-pubsub-v1:1.105.19:1.105.20-SNAPSHOT
+proto-google-cloud-pubsub-v1:1.105.19:1.105.20-SNAPSHOT