diff --git a/VERSION b/VERSION
index 5235f81f7..669e43a7c 100644
--- a/VERSION
+++ b/VERSION
@@ -1,3 +1,3 @@
-Bullet Collision Detection and Physics Library version 2.51
+Bullet Collision Detection and Physics Library version 2.52
 http://bullet.sourceforge.net
 
diff --git a/configure.ac b/configure.ac
index 2c7124fcd..5f1debeaf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@ AC_PREREQ([2.54])
 #----------------------------------------------------------------------------
 AC_INIT(
     [bullet],
-    [2.51],
+    [2.52],
     [bullet@erwincoumans.com])
 CS_PACKAGEINFO(
     [Bullet Continuous Collision Detection and Physics Library],