diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e6a2cd2ed3c5024cadcf228e3d2b523cfa2b7b83..514739899ea92345e43f9461c9e10d9b9675ae2d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -28,10 +28,10 @@ variables:
 
 ## Build jobs
 
-build-coq.8.14.0:
+build-coq.8.15.1:
   <<: *template
   variables:
-    OPAM_PINS: "coq version 8.14.0"
+    OPAM_PINS: "coq version 8.15.1"
     DENY_WARNINGS: "1"
     MANGLE_NAMES: "1"
   tags:
@@ -40,7 +40,7 @@ build-coq.8.14.0:
 trigger-iris.timing:
   <<: *template
   variables:
-    OPAM_PINS: "coq version 8.13.1   git+https://gitlab.mpi-sws.org/$IRIS_REPO#$IRIS_REV"
+    OPAM_PINS: "coq version 8.15.1   git+https://gitlab.mpi-sws.org/$IRIS_REPO#$IRIS_REV"
   tags:
   - fp-timing
   only:
@@ -56,7 +56,7 @@ trigger-iris.dev:
   variables:
     STDPP_REPO: "iris/stdpp"
     IRIS_REPO: "iris/iris"
-    OPAM_PINS: "coq version 8.14.dev   git+https://gitlab.mpi-sws.org/$STDPP_REPO#$STDPP_REV   git+https://gitlab.mpi-sws.org/$IRIS_REPO#$IRIS_REV"
+    OPAM_PINS: "coq version 8.15.dev   git+https://gitlab.mpi-sws.org/$STDPP_REPO#$STDPP_REV   git+https://gitlab.mpi-sws.org/$IRIS_REPO#$IRIS_REV"
   except:
   only:
     refs:
diff --git a/README.md b/README.md
index ecba28e1a243f87ef0df43bf3191d075a9a66464..e51dd4067605c9e1a54ad1e5725eaa8cfcd46406 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ This is the Coq development accompanying lambda-Rust.
 
 This version is known to compile with:
 
- - Coq 8.14.0
+ - Coq 8.15.1
  - A development version of [Iris](https://gitlab.mpi-sws.org/iris/iris)
 
 ## Building from source