diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 01a636cb8ae05a587d06e930a2f90951eb45224c..4d6936e2fb4d948242689f31f30cea237aba62f3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -31,8 +31,7 @@ variables:
 build-coq.8.19.1:
   <<: *template
   variables:
-    OPAM_PINS: "coq version 8.19.1"
-    DENY_WARNINGS: "1"
+    OPAM_PINS: "coq version 8.20.1"
     OPAM_PKG: "1"
     MANGLE_NAMES: "1"
   tags:
@@ -41,7 +40,7 @@ build-coq.8.19.1:
 trigger-iris.timing:
   <<: *template
   variables:
-    OPAM_PINS: "coq version 8.19.1   git+https://gitlab.mpi-sws.org/$IRIS_REPO#$IRIS_REV"
+    OPAM_PINS: "coq version 8.20.1   git+https://gitlab.mpi-sws.org/$IRIS_REPO#$IRIS_REV"
   tags:
   - fp-timing
   only:
diff --git a/README.md b/README.md
index 75f9e9e2f9cc50d86174d448d37b0d46ee94825c..70ccfd52ef3a2eba1a4e20941a82e13bfd7af462 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ This is a separation logic for ORC11 based on [iGPS] and [FSL]. It has been rece
 
 This version is known to compile with:
 
- - Coq 8.19.1
+ - Coq 8.20.1
  - A development version of [Iris].
 
 The easiest way to install the correct versions of the dependencies is through