diff --git a/.github/workflows/snap.yml b/.github/workflows/snap.yml
index 21332ab2d..cf133b5bc 100644
--- a/.github/workflows/snap.yml
+++ b/.github/workflows/snap.yml
@@ -51,6 +51,7 @@ jobs:
       - name: Clone.
         uses: actions/checkout@v2
         with:
+          fetch-depth: 0
           submodules: recursive
 
       - name: First set up.