diff --git a/antlr4-maven-plugin/pom.xml b/antlr4-maven-plugin/pom.xml
index 86d8507d86..a32cec64e8 100644
--- a/antlr4-maven-plugin/pom.xml
+++ b/antlr4-maven-plugin/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>org.antlr</groupId>
     <artifactId>antlr4-master</artifactId>
-    <version>4.9.1-SNAPSHOT</version>
+    <version>4.9.1</version>
   </parent>
   <artifactId>antlr4-maven-plugin</artifactId>
   <packaging>maven-plugin</packaging>
diff --git a/pom.xml b/pom.xml
index 52c8aca1ad..bc4c1fb708 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
 	</parent>
 	<groupId>org.antlr</groupId>
 	<artifactId>antlr4-master</artifactId>
-	<version>4.9.1-SNAPSHOT</version>
+	<version>4.9.1</version>
 	<packaging>pom</packaging>
 
 	<name>ANTLR 4</name>
diff --git a/runtime-testsuite/annotations/pom.xml b/runtime-testsuite/annotations/pom.xml
index 22a9a99fe1..5d9dba6994 100644
--- a/runtime-testsuite/annotations/pom.xml
+++ b/runtime-testsuite/annotations/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <groupId>org.antlr</groupId>
     <artifactId>antlr4-master</artifactId>
-    <version>4.9.1-SNAPSHOT</version>
+    <version>4.9.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>antlr4-runtime-test-annotations</artifactId>
diff --git a/runtime-testsuite/pom.xml b/runtime-testsuite/pom.xml
index 311e10c36d..465e6d3324 100644
--- a/runtime-testsuite/pom.xml
+++ b/runtime-testsuite/pom.xml
@@ -10,7 +10,7 @@
 	<parent>
 		<groupId>org.antlr</groupId>
 		<artifactId>antlr4-master</artifactId>
-		<version>4.9.1-SNAPSHOT</version>
+		<version>4.9.1</version>
 	</parent>
 	<artifactId>antlr4-runtime-testsuite</artifactId>
 	<name>ANTLR 4 Runtime Tests (2nd generation)</name>
diff --git a/runtime-testsuite/processors/pom.xml b/runtime-testsuite/processors/pom.xml
index f64cc21a72..d82a345d53 100644
--- a/runtime-testsuite/processors/pom.xml
+++ b/runtime-testsuite/processors/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>org.antlr</groupId>
 		<artifactId>antlr4-master</artifactId>
-		<version>4.9.1-SNAPSHOT</version>
+		<version>4.9.1</version>
 		<relativePath>../../pom.xml</relativePath>
 	</parent>
 	<artifactId>antlr4-runtime-test-annotation-processors</artifactId>
diff --git a/runtime/Java/pom.xml b/runtime/Java/pom.xml
index 989dde362c..b237ddd36d 100644
--- a/runtime/Java/pom.xml
+++ b/runtime/Java/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>org.antlr</groupId>
 		<artifactId>antlr4-master</artifactId>
-		<version>4.9.1-SNAPSHOT</version>
+		<version>4.9.1</version>
 		<relativePath>../../pom.xml</relativePath>
 	</parent>
 	<artifactId>antlr4-runtime</artifactId>
diff --git a/tool-testsuite/pom.xml b/tool-testsuite/pom.xml
index 06e149fb6a..bf7a6bcbe7 100644
--- a/tool-testsuite/pom.xml
+++ b/tool-testsuite/pom.xml
@@ -10,7 +10,7 @@
   <parent>
     <groupId>org.antlr</groupId>
     <artifactId>antlr4-master</artifactId>
-    <version>4.9.1-SNAPSHOT</version>
+    <version>4.9.1</version>
   </parent>
   <artifactId>antlr4-tool-testsuite</artifactId>
   <name>ANTLR 4 Tool Tests</name>
diff --git a/tool/pom.xml b/tool/pom.xml
index 48ec97f560..0e1c28179c 100644
--- a/tool/pom.xml
+++ b/tool/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>org.antlr</groupId>
 		<artifactId>antlr4-master</artifactId>
-		<version>4.9.1-SNAPSHOT</version>
+		<version>4.9.1</version>
 	</parent>
 	<artifactId>antlr4</artifactId>
 	<name>ANTLR 4 Tool</name>