diff --git a/.gitmodules b/.gitmodules
index 90038b170c41dbe387483cb64b452a7d6e4bab19..550d0d4a9accc206fc9214d7b3baaa9101024ab9 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "workflow/external_repo/astrocyte-atac-runner"]
 	path = workflow/external_repo/astrocyte-atac-runner
 	url = https://git.biohpc.swmed.edu/s219741/astrocyte-atac-runner.git
-	btanch = master
+	branch = master