diff --git a/annotation/pom.xml b/annotation/pom.xml
index fbbba7c5524..78d5320bbac 100644
--- a/annotation/pom.xml
+++ b/annotation/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>@BugPattern annotation</name>
diff --git a/annotations/pom.xml b/annotations/pom.xml
index 62ebfe88a40..a22a972f7e4 100644
--- a/annotations/pom.xml
+++ b/annotations/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>error-prone annotations</name>
diff --git a/check_api/pom.xml b/check_api/pom.xml
index 0824e406034..793d2656952 100644
--- a/check_api/pom.xml
+++ b/check_api/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>error-prone check api</name>
diff --git a/core/pom.xml b/core/pom.xml
index 41f23273342..2c35faad538 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>error-prone library</name>
diff --git a/docgen/pom.xml b/docgen/pom.xml
index 8ee00587502..3136ad3cbfa 100644
--- a/docgen/pom.xml
+++ b/docgen/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>Documentation tool for generating Error Prone bugpattern documentation</name>
diff --git a/docgen_processor/pom.xml b/docgen_processor/pom.xml
index 7d97a4cb4ca..98d70218a9b 100644
--- a/docgen_processor/pom.xml
+++ b/docgen_processor/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>JSR-269 annotation processor for @BugPattern annotation</name>
diff --git a/pom.xml b/pom.xml
index 2181e204e5b..220364a2e6a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
   <name>Error Prone parent POM</name>
   <groupId>com.google.errorprone</groupId>
   <artifactId>error_prone_parent</artifactId>
-  <version>1.0-HEAD-SNAPSHOT</version>
+  <version>2.31.0</version>
   <packaging>pom</packaging>
 
   <description>Error Prone is a static analysis tool for Java that catches common programming mistakes at compile-time.</description>
diff --git a/refaster/pom.xml b/refaster/pom.xml
index 968b0c2bae4..f9e63ec2e18 100644
--- a/refaster/pom.xml
+++ b/refaster/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <artifactId>error_prone_parent</artifactId>
         <groupId>com.google.errorprone</groupId>
-        <version>1.0-HEAD-SNAPSHOT</version>
+        <version>2.31.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/test_helpers/pom.xml b/test_helpers/pom.xml
index 66b12d308c3..de1845d060f 100644
--- a/test_helpers/pom.xml
+++ b/test_helpers/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>error-prone test helpers</name>
diff --git a/type_annotations/pom.xml b/type_annotations/pom.xml
index 365123af188..6a493b5a7ff 100644
--- a/type_annotations/pom.xml
+++ b/type_annotations/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>1.0-HEAD-SNAPSHOT</version>
+    <version>2.31.0</version>
   </parent>
 
   <name>error-prone type annotations</name>