diff --git a/com.ibm.wala.cast.python.jython.test/pom.xml b/com.ibm.wala.cast.python.jython.test/pom.xml
index 2246f323b..04047b441 100644
--- a/com.ibm.wala.cast.python.jython.test/pom.xml
+++ b/com.ibm.wala.cast.python.jython.test/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python.jython.test</artifactId>
   <dependencies>
diff --git a/com.ibm.wala.cast.python.jython/pom.xml b/com.ibm.wala.cast.python.jython/pom.xml
index 317b2ce5e..669034e54 100644
--- a/com.ibm.wala.cast.python.jython/pom.xml
+++ b/com.ibm.wala.cast.python.jython/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python.jython</artifactId>
   <dependencies>
diff --git a/com.ibm.wala.cast.python.jython3.test/pom.xml b/com.ibm.wala.cast.python.jython3.test/pom.xml
index 786d526b0..8a777e2be 100644
--- a/com.ibm.wala.cast.python.jython3.test/pom.xml
+++ b/com.ibm.wala.cast.python.jython3.test/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python.jython3.test</artifactId>
   <dependencies>
diff --git a/com.ibm.wala.cast.python.jython3/pom.xml b/com.ibm.wala.cast.python.jython3/pom.xml
index f22a0939f..92ed015ce 100644
--- a/com.ibm.wala.cast.python.jython3/pom.xml
+++ b/com.ibm.wala.cast.python.jython3/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python.jython3</artifactId>
   <dependencies>
diff --git a/com.ibm.wala.cast.python.ml.test/pom.xml b/com.ibm.wala.cast.python.ml.test/pom.xml
index c932dd97d..bd704442a 100644
--- a/com.ibm.wala.cast.python.ml.test/pom.xml
+++ b/com.ibm.wala.cast.python.ml.test/pom.xml
@@ -4,14 +4,14 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python.ml.test</artifactId>
   <dependencies>
     <dependency>
       <groupId>${project.groupId}</groupId>
       <artifactId>com.ibm.wala.cast.python.jython.test</artifactId>
-      <version>0.19.0</version>
+      <version>0.20.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>
diff --git a/com.ibm.wala.cast.python.ml/pom.xml b/com.ibm.wala.cast.python.ml/pom.xml
index 42affb32b..bfe8c4ebb 100644
--- a/com.ibm.wala.cast.python.ml/pom.xml
+++ b/com.ibm.wala.cast.python.ml/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python.ml</artifactId>
   <dependencies>
diff --git a/com.ibm.wala.cast.python.test/pom.xml b/com.ibm.wala.cast.python.test/pom.xml
index f85eaf1f5..39d4eb0c7 100644
--- a/com.ibm.wala.cast.python.test/pom.xml
+++ b/com.ibm.wala.cast.python.test/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python.test</artifactId>
   <properties>
diff --git a/com.ibm.wala.cast.python/pom.xml b/com.ibm.wala.cast.python/pom.xml
index c98c99608..07f4c7901 100644
--- a/com.ibm.wala.cast.python/pom.xml
+++ b/com.ibm.wala.cast.python/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.ibm.wala</groupId>
     <artifactId>ml</artifactId>
-    <version>0.19.0</version>
+    <version>0.20.0-SNAPSHOT</version>
   </parent>
   <artifactId>com.ibm.wala.cast.python</artifactId>
   <dependencies>
diff --git a/pom.xml b/pom.xml
index bf4bf1bf3..9b0afb468 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.ibm.wala</groupId>
   <artifactId>ml</artifactId>
-  <version>0.19.0</version>
+  <version>0.20.0-SNAPSHOT</version>
   <packaging>pom</packaging>
   <modules>
     <module>com.ibm.wala.cast.python</module>