diff --git a/examples/apt/preferences.d/90debian-release-pinning b/examples/apt/preferences.d/90debian-release-pinning
index ccb7d70..43206c7 100644
--- a/examples/apt/preferences.d/90debian-release-pinning
+++ b/examples/apt/preferences.d/90debian-release-pinning
@@ -1,5 +1,5 @@
 Package: *
-Pin: release a=testing
+Pin: release a=testing*
 Pin-Priority: 990
 
 Package: *