diff --git a/requirements.txt b/requirements.txt
index f86ce3b16b1e1e103c619682292e4f893795dde3..638d4e634953caf65ed89a9c44efad26f0e1be25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,8 @@ bob.db.base
 bob.db.verification.utils 
 bob.db.verification.filelist
 bob.db.atnt  # required for testing
-bob.bio.base 
+bob.bio.base
+bob.bio.gmm
 bob.learn.boosting 
 bob.ip.facedetect
 bob.ip.flandmark