diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
index b90aa4f..dd0faf8 100644
--- a/deps/CMakeLists.txt
+++ b/deps/CMakeLists.txt
@@ -59,6 +59,6 @@ external_dependency(GTest
 external_dependency(itertools
   GIT_REPO https://github.com/TRIQS/itertools
   VERSION 1.3
-  GIT_TAG unstable
+  GIT_TAG 1.3.x
 
 )