diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index debc9c59a..947d3757e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -121,7 +121,7 @@ set_target_properties(oqs
     ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib"
     LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib"
     VERSION ${OQS_VERSION_TEXT}
-    SOVERSION 5
+    SOVERSION 6
     # For Windows DLLs
     RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")