diff --git a/.gitmodules b/.gitmodules
index 3f2e087c..98827a4d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "dp-library"]
 	path = dp-library
 	url = https://github.com/DigitalPlatform/dp-library
+	branch = dev