diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index ac1a9163cc..039ba8e1c2 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>benchmarks</artifactId>
diff --git a/pom.xml b/pom.xml
index 637968f3c7..9c064673a2 100755
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 
   <groupId>io.zipkin</groupId>
   <artifactId>zipkin-parent</artifactId>
-  <version>3.4.0-SNAPSHOT</version>
+  <version>3.4.0</version>
   <packaging>pom</packaging>
 
   <modules>
@@ -136,7 +136,7 @@
     <url>https://github.com/openzipkin/zipkin</url>
     <connection>scm:git:https://github.com/openzipkin/zipkin.git</connection>
     <developerConnection>scm:git:https://github.com/openzipkin/zipkin.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>3.4.0</tag>
   </scm>
 
   <!-- Developer section is needed for Maven Central, but doesn't need to include each person -->
diff --git a/zipkin-collector/activemq/pom.xml b/zipkin-collector/activemq/pom.xml
index 444fe6027d..345fa15ee9 100644
--- a/zipkin-collector/activemq/pom.xml
+++ b/zipkin-collector/activemq/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-collector-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-collector-activemq</artifactId>
diff --git a/zipkin-collector/core/pom.xml b/zipkin-collector/core/pom.xml
index 74e21c456b..c4ebf785a5 100644
--- a/zipkin-collector/core/pom.xml
+++ b/zipkin-collector/core/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-collector-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-collector</artifactId>
diff --git a/zipkin-collector/kafka/pom.xml b/zipkin-collector/kafka/pom.xml
index 3a505b38e4..fb0daec3a0 100644
--- a/zipkin-collector/kafka/pom.xml
+++ b/zipkin-collector/kafka/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-collector-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-collector-kafka</artifactId>
diff --git a/zipkin-collector/pom.xml b/zipkin-collector/pom.xml
index c49bdf98f4..4bb21aa966 100644
--- a/zipkin-collector/pom.xml
+++ b/zipkin-collector/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <groupId>io.zipkin.zipkin2</groupId>
diff --git a/zipkin-collector/rabbitmq/pom.xml b/zipkin-collector/rabbitmq/pom.xml
index 348528caa7..7253efb057 100644
--- a/zipkin-collector/rabbitmq/pom.xml
+++ b/zipkin-collector/rabbitmq/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-collector-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-collector-rabbitmq</artifactId>
diff --git a/zipkin-collector/scribe/pom.xml b/zipkin-collector/scribe/pom.xml
index d96288cfb8..ca6732c092 100644
--- a/zipkin-collector/scribe/pom.xml
+++ b/zipkin-collector/scribe/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-collector-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-collector-scribe</artifactId>
diff --git a/zipkin-junit5/pom.xml b/zipkin-junit5/pom.xml
index c421a2f293..3edf181376 100644
--- a/zipkin-junit5/pom.xml
+++ b/zipkin-junit5/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <groupId>io.zipkin.zipkin2</groupId>
diff --git a/zipkin-lens/pom.xml b/zipkin-lens/pom.xml
index e179116aed..05b43619b3 100644
--- a/zipkin-lens/pom.xml
+++ b/zipkin-lens/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-lens</artifactId>
diff --git a/zipkin-server/pom.xml b/zipkin-server/pom.xml
index d3d5005b19..a93d1cbc30 100644
--- a/zipkin-server/pom.xml
+++ b/zipkin-server/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-server</artifactId>
diff --git a/zipkin-storage/cassandra/pom.xml b/zipkin-storage/cassandra/pom.xml
index 25e7d4fd85..043aae7803 100644
--- a/zipkin-storage/cassandra/pom.xml
+++ b/zipkin-storage/cassandra/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-storage-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-storage-cassandra</artifactId>
diff --git a/zipkin-storage/elasticsearch/pom.xml b/zipkin-storage/elasticsearch/pom.xml
index 249ec846ed..f7e15ca6aa 100644
--- a/zipkin-storage/elasticsearch/pom.xml
+++ b/zipkin-storage/elasticsearch/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-storage-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-storage-elasticsearch</artifactId>
diff --git a/zipkin-storage/mysql-v1/pom.xml b/zipkin-storage/mysql-v1/pom.xml
index 15b88ec59f..a9590cd23b 100644
--- a/zipkin-storage/mysql-v1/pom.xml
+++ b/zipkin-storage/mysql-v1/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin.zipkin2</groupId>
     <artifactId>zipkin-storage-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <artifactId>zipkin-storage-mysql-v1</artifactId>
diff --git a/zipkin-storage/pom.xml b/zipkin-storage/pom.xml
index cb1a0c0859..d6b367660c 100644
--- a/zipkin-storage/pom.xml
+++ b/zipkin-storage/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <groupId>io.zipkin.zipkin2</groupId>
diff --git a/zipkin-tests/pom.xml b/zipkin-tests/pom.xml
index 85f71a4430..68b513e9e1 100644
--- a/zipkin-tests/pom.xml
+++ b/zipkin-tests/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <groupId>io.zipkin.zipkin2</groupId>
diff --git a/zipkin/pom.xml b/zipkin/pom.xml
index f408c30895..45fcb6caf7 100644
--- a/zipkin/pom.xml
+++ b/zipkin/pom.xml
@@ -11,7 +11,7 @@
   <parent>
     <groupId>io.zipkin</groupId>
     <artifactId>zipkin-parent</artifactId>
-    <version>3.4.0-SNAPSHOT</version>
+    <version>3.4.0</version>
   </parent>
 
   <groupId>io.zipkin.zipkin2</groupId>