diff --git a/.gitmodules b/.gitmodules
index 7031995a2f56e04b637fe8b681f0d1ce4019c406..f78cd69d01a1888fa927c8b37bfd4b6eb6f80816 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -9,4 +9,4 @@
 	url = https://github.com/apache/skywalking-rocketbot-ui.git
 [submodule "test/e2e-v2/java-test-service/e2e-protocol/src/main/proto"]
 	path = test/e2e-v2/java-test-service/e2e-protocol/src/main/proto
-	url = git@github.com:apache/skywalking-data-collect-protocol.git
+	url = https://github.com/apache/skywalking-data-collect-protocol.git