diff --git a/tests/.zshenv b/tests/.zshenv
index 46fd8a6..2a5cc40 100644
--- a/tests/.zshenv
+++ b/tests/.zshenv
@@ -2,6 +2,7 @@
 
 # See cram's documentation for some of the variables used below.
 
+export ANTIGEN_DEFAULT_REPO_URL=https://github.com/robbyrussell/oh-my-zsh.git
 export ADOTDIR="$TMP/dot-antigen"
 
 rm "$TESTDIR/.zcompdump"