diff --git a/.gitmodules b/.gitmodules
index 1c7e8b5..a9171d9 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "poseidon"]
 	path = poseidon
 	url = https://htwkmooc@gitlab.dit.htwk-leipzig.de/htwkmooc/poseidon.git
+[submodule "polyphem"]
+        path = polyphem
+        url = https://gitlab.dit.htwk-leipzig.de/htwkmooc/polyphem.git