diff --git a/.gitmodules b/.gitmodules
index 1326048fa6167bd1cb49e200fd29c31300c4d322..35cfdc103bd7422ab1692ce59ac6f4967426c646 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,8 @@
 [submodule "zipr_umbrella"]
 	path = zipr_umbrella
 	url = git@git.zephyr-software.com:allnp/peasoup_umbrella.git
+	branch = master
 [submodule "zfuzz"]
 	path = zfuzz
 	url = git@git.zephyr-software.com:allzp/zfuzz.git
+	branch = master