diff --git a/cmake/git-version.cmake b/cmake/git-version.cmake
index be226fd..1451ff6 100644
--- a/cmake/git-version.cmake
+++ b/cmake/git-version.cmake
@@ -15,6 +15,8 @@ if(GIT_EXECUTABLE)
   endif()
 endif()
 
+set(LPAC_VERSION "$ENV{LPAC_VERSION}")
+
 # Final fallback: Just use a bogus version string that is semantically older
 # than anything else and spit out a warning to the developer.
 if(NOT DEFINED LPAC_VERSION)