diff --git a/autogen.sh b/autogen.sh
index a3bdbc0..89e9846 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 
 # NOTE: update version in CMakeLists.txt after changing these
-N2N_MAJOR="2"
-N2N_MINOR="9"
+N2N_MAJOR="3"
+N2N_MINOR="1"
 N2N_PATCH="0"
 
 N2N_VERSION_SHORT="$N2N_MAJOR.$N2N_MINOR.$N2N_PATCH"