diff --git a/px4_bringup/package.xml b/px4_bringup/package.xml
index be3cc8d..7eba7c7 100644
--- a/px4_bringup/package.xml
+++ b/px4_bringup/package.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <package>
   <name>px4_bringup</name>
-  <version>3.1</version>
+  <version>3.1.0</version>
   <description>This package brings up the mavros interface of a px4 autopilot,
   that can be real or simulted in gazebo with software-in-the-loop (sitl).</description>
 
diff --git a/robots_description/package.xml b/robots_description/package.xml
index e47e159..c173dd9 100644
--- a/robots_description/package.xml
+++ b/robots_description/package.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <package>
   <name>robots_description</name>
-  <version>3.1</version>
+  <version>3.1.0</version>
   <description>This package contains robots descriptions, 
   mostly aimed for px4 sitl gazebo simulation.</description>
 
diff --git a/ual_teleop/package.xml b/ual_teleop/package.xml
index 7c294bf..4aea4ac 100644
--- a/ual_teleop/package.xml
+++ b/ual_teleop/package.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <package format="2">
   <name>ual_teleop</name>
-  <version>3.1</version>
+  <version>3.1.0</version>
   <description>The ual_teleop package</description>
 
   <!-- One maintainer tag required, multiple allowed, one person per tag -->
diff --git a/uav_abstraction_layer/package.xml b/uav_abstraction_layer/package.xml
index bb457f0..7a3571d 100644
--- a/uav_abstraction_layer/package.xml
+++ b/uav_abstraction_layer/package.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <package>
   <name>uav_abstraction_layer</name>
-  <version>3.1</version>
+  <version>3.1.0</version>
   <description>This package provides a low level interface to a uav platform.</description>
 
   <!-- One maintainer tag required, multiple allowed, one person per tag -->