diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 630bd51937bbe55ef4555b553d1f93832c4da43d..5f2f1d23a8f20469de006a0c437762771aceb924 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -44,6 +44,6 @@ build-coq.8.6.1:
 build-iris.dev:
   <<: *template
   variables:
-    OPAM_PINS: "coq version dev   coq-mathcomp-ssreflect version 1.6.4   coq-iris.dev git https://gitlab.mpi-sws.org/FP/iris-coq.git#$IRIS_REV"
+    OPAM_PINS: "coq version dev   coq-mathcomp-ssreflect version dev   coq-iris.dev git https://gitlab.mpi-sws.org/FP/iris-coq.git#$IRIS_REV"
   only:
   - triggers