diff --git a/tools/VERSION b/tools/VERSION
index 831acfe..5b4d144 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -36,4 +36,4 @@
 PRERELEASE 0
 PRERELEASE_PATCH 0
 ABI_VERSION 6
-OLDEST_SUPPORTED_ABI_VERSION 3
+OLDEST_SUPPORTED_ABI_VERSION 5