diff --git a/include/boost/lambda2/lambda2.hpp b/include/boost/lambda2/lambda2.hpp
index c2f96e2..b2c2421 100644
--- a/include/boost/lambda2/lambda2.hpp
+++ b/include/boost/lambda2/lambda2.hpp
@@ -14,7 +14,7 @@
 
 // Same format as BOOST_VERSION:
 //   major * 100000 + minor * 100 + patch
-#define BOOST_LAMBDA2_VERSION 109000
+#define BOOST_LAMBDA2_VERSION 109100
 
 namespace boost
 {