diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0fc21258e1ae4dc5fb6d3f7cbc19ca96f3387f7b..2e95f55b9d39bcc553acadca9f4189ee8639eac6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,10 +27,11 @@ variables:
 
 ## Build jobs
 
-build-coq.8.11.1:
+build-coq.8.11.2:
   <<: *template
   variables:
-    OPAM_PINS: "coq version 8.11.1"
+    OPAM_PINS: "coq version 8.11.2"
+    DENY_WARNINGS: "1"
 
 build-iris.dev:
   <<: *template
diff --git a/README.md b/README.md
index a5ac0b9cdafa939638430efe5f14a51c02ad4819..3905cc740dd3d8a193e4e6a91e332c041f9e1963 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ at POPL'20.
 
 It has been built and tested with the following dependencies
 
- - Coq 8.11.1
+ - Coq 8.11.2
  - The version of Iris in the [opam file](opam)
 
 In order to build, install the above dependencies and then run