diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index f72febe81..f97dc33ef 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>benchmarks</artifactId>
diff --git a/mockwebserver/pom.xml b/mockwebserver/pom.xml
index 20f269ec1..555e19ddf 100644
--- a/mockwebserver/pom.xml
+++ b/mockwebserver/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>mockwebserver</artifactId>
diff --git a/okcurl/pom.xml b/okcurl/pom.xml
index 76da432e4..a12f1f43a 100644
--- a/okcurl/pom.xml
+++ b/okcurl/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okcurl</artifactId>
diff --git a/okhttp-android-support/pom.xml b/okhttp-android-support/pom.xml
index 58dee5e33..6d26b3673 100644
--- a/okhttp-android-support/pom.xml
+++ b/okhttp-android-support/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp-android-support</artifactId>
diff --git a/okhttp-apache/pom.xml b/okhttp-apache/pom.xml
index d50158a15..8ae2bc8c2 100644
--- a/okhttp-apache/pom.xml
+++ b/okhttp-apache/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp-apache</artifactId>
diff --git a/okhttp-logging-interceptor/pom.xml b/okhttp-logging-interceptor/pom.xml
index 894d96231..6a451bf7f 100644
--- a/okhttp-logging-interceptor/pom.xml
+++ b/okhttp-logging-interceptor/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>logging-interceptor</artifactId>
diff --git a/okhttp-testing-support/pom.xml b/okhttp-testing-support/pom.xml
index 0246756be..943f53acb 100644
--- a/okhttp-testing-support/pom.xml
+++ b/okhttp-testing-support/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp-testing-support</artifactId>
diff --git a/okhttp-tests/pom.xml b/okhttp-tests/pom.xml
index b174f72ee..5585632fc 100644
--- a/okhttp-tests/pom.xml
+++ b/okhttp-tests/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp-tests</artifactId>
diff --git a/okhttp-urlconnection/pom.xml b/okhttp-urlconnection/pom.xml
index 8be2f3e60..3aaa66dbd 100644
--- a/okhttp-urlconnection/pom.xml
+++ b/okhttp-urlconnection/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp-urlconnection</artifactId>
diff --git a/okhttp-ws-tests/pom.xml b/okhttp-ws-tests/pom.xml
index 74c3721f9..cef575962 100644
--- a/okhttp-ws-tests/pom.xml
+++ b/okhttp-ws-tests/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp-ws-tests</artifactId>
diff --git a/okhttp-ws/pom.xml b/okhttp-ws/pom.xml
index cddc1a0b6..7cbfab9e5 100644
--- a/okhttp-ws/pom.xml
+++ b/okhttp-ws/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp-ws</artifactId>
diff --git a/okhttp/pom.xml b/okhttp/pom.xml
index 878e557ec..a26e988b2 100644
--- a/okhttp/pom.xml
+++ b/okhttp/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>okhttp</artifactId>
diff --git a/pom.xml b/pom.xml
index ea0a3f822..52054e950 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
 
   <groupId>com.squareup.okhttp3</groupId>
   <artifactId>parent</artifactId>
-  <version>3.3.0</version>
+  <version>3.4.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>OkHttp (Parent)</name>
@@ -67,7 +67,7 @@
     <url>https://github.com/square/okhttp/</url>
     <connection>scm:git:https://github.com/square/okhttp.git</connection>
     <developerConnection>scm:git:git@github.com:square/okhttp.git</developerConnection>
-    <tag>parent-3.3.0</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <issueManagement>
diff --git a/samples/crawler/pom.xml b/samples/crawler/pom.xml
index 4af245463..a40fe5b58 100644
--- a/samples/crawler/pom.xml
+++ b/samples/crawler/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3.sample</groupId>
     <artifactId>sample-parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>crawler</artifactId>
diff --git a/samples/guide/pom.xml b/samples/guide/pom.xml
index e8b173d51..569099322 100644
--- a/samples/guide/pom.xml
+++ b/samples/guide/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3.sample</groupId>
     <artifactId>sample-parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>guide</artifactId>
diff --git a/samples/pom.xml b/samples/pom.xml
index f0d7d6bb5..de77532ea 100644
--- a/samples/pom.xml
+++ b/samples/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <groupId>com.squareup.okhttp3.sample</groupId>
diff --git a/samples/simple-client/pom.xml b/samples/simple-client/pom.xml
index c196e9c56..5bb5efe41 100644
--- a/samples/simple-client/pom.xml
+++ b/samples/simple-client/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3.sample</groupId>
     <artifactId>sample-parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>simple-client</artifactId>
diff --git a/samples/static-server/pom.xml b/samples/static-server/pom.xml
index 5700d6996..dc446c5a2 100644
--- a/samples/static-server/pom.xml
+++ b/samples/static-server/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.squareup.okhttp3.sample</groupId>
     <artifactId>sample-parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>static-server</artifactId>