diff --git a/CMakeLists.txt b/CMakeLists.txt
index c2ee0eb7..8c692b52 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ PROJECT(PhysicsFS)
 SET(PHYSFS_VERSION 1.1.1)
 
 # Increment this if/when we break backwards compatibility.
-SET(PHYSFS_SOVERSION 0)
+SET(PHYSFS_SOVERSION 1)
 
 # I hate that they define "WIN32" ... we're about to move to Win64...I hope!
 IF(WIN32 AND NOT WINDOWS)