diff --git a/antlr4-maven-plugin/pom.xml b/antlr4-maven-plugin/pom.xml
index b793c23b5..c71171291 100644
--- a/antlr4-maven-plugin/pom.xml
+++ b/antlr4-maven-plugin/pom.xml
@@ -13,7 +13,7 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.7.3-SNAPSHOT</version>
+        <version>4.7.3</version>
     </parent>
 
     <artifactId>antlr4-maven-plugin</artifactId>
diff --git a/antlr4-testgen-maven-plugin/pom.xml b/antlr4-testgen-maven-plugin/pom.xml
index e278b88b7..8ba6708d6 100644
--- a/antlr4-testgen-maven-plugin/pom.xml
+++ b/antlr4-testgen-maven-plugin/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.7.3-SNAPSHOT</version>
+        <version>4.7.3</version>
     </parent>
 
     <artifactId>antlr4-testgen-maven-plugin</artifactId>
diff --git a/perf-testsuite/pom.xml b/perf-testsuite/pom.xml
index 93e8f6b0c..0bcc75c44 100644
--- a/perf-testsuite/pom.xml
+++ b/perf-testsuite/pom.xml
@@ -10,7 +10,7 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.7.3-SNAPSHOT</version>
+        <version>4.7.3</version>
     </parent>
 
     <artifactId>antlr4-perf-testsuite</artifactId>
diff --git a/pom.xml b/pom.xml
index cc32db329..869621f92 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,7 +15,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.tunnelvisionlabs</groupId>
     <artifactId>antlr4-master</artifactId>
-    <version>4.7.3-SNAPSHOT</version>
+    <version>4.7.3</version>
     <packaging>pom</packaging>
 
     <name>ANTLR 4</name>
@@ -106,7 +106,7 @@
         <url>https://github.com/antlr/antlr4/tree/master</url>
         <connection>scm:git:git://github.com/antlr/antlr4.git</connection>
         <developerConnection>scm:git:git@github.com:antlr/antlr4.git</developerConnection>
-      <tag>HEAD</tag>
+      <tag>4.7.3-opt</tag>
   </scm>
 
     <profiles>
diff --git a/runtime-testsuite/pom.xml b/runtime-testsuite/pom.xml
index a2ca3821b..d9d0f4802 100644
--- a/runtime-testsuite/pom.xml
+++ b/runtime-testsuite/pom.xml
@@ -10,7 +10,7 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.7.3-SNAPSHOT</version>
+        <version>4.7.3</version>
     </parent>
 
     <artifactId>runtime-testsuite</artifactId>
diff --git a/runtime/Java/pom.xml b/runtime/Java/pom.xml
index 4eeb2c2e1..0a6bf1a5f 100644
--- a/runtime/Java/pom.xml
+++ b/runtime/Java/pom.xml
@@ -10,7 +10,7 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.7.3-SNAPSHOT</version>
+        <version>4.7.3</version>
         <relativePath>../..</relativePath>
     </parent>
 
diff --git a/runtime/JavaAnnotations/pom.xml b/runtime/JavaAnnotations/pom.xml
index 85dbd8871..a2b51ee62 100644
--- a/runtime/JavaAnnotations/pom.xml
+++ b/runtime/JavaAnnotations/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.7.3-SNAPSHOT</version>
+        <version>4.7.3</version>
         <relativePath>../..</relativePath>
     </parent>
 
diff --git a/tool/pom.xml b/tool/pom.xml
index 7e0a267b4..5b453c55d 100644
--- a/tool/pom.xml
+++ b/tool/pom.xml
@@ -10,7 +10,7 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.7.3-SNAPSHOT</version>
+        <version>4.7.3</version>
     </parent>
 
     <artifactId>antlr4</artifactId>