diff --git a/CMakeLists.txt b/CMakeLists.txt
index b8480867e..2d871424c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ endif()
 # Set the version number for the library
 set (GTSAM_VERSION_MAJOR 4)
 set (GTSAM_VERSION_MINOR 1)
-set (GTSAM_VERSION_PATCH 0)
+set (GTSAM_VERSION_PATCH 1)
 math (EXPR GTSAM_VERSION_NUMERIC "10000 * ${GTSAM_VERSION_MAJOR} + 100 * ${GTSAM_VERSION_MINOR} + ${GTSAM_VERSION_PATCH}")
 set (GTSAM_VERSION_STRING "${GTSAM_VERSION_MAJOR}.${GTSAM_VERSION_MINOR}.${GTSAM_VERSION_PATCH}")