diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 00e4a1e37c3d81a7b4d6465fafadd001967461e6..07bf1152ef1e81d63f499abbd56a349cad8de97a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -32,12 +32,20 @@ build-coq.dev:
     OCAML: "ocaml-base-compiler.4.07.0"
     OPAM_PINS: "coq version dev"
 
+build-coq.8.9.0:
+  <<: *template
+  variables:
+    OPAM_PINS: "coq version 8.9.0"
+    OPAM_PKG: "coq-lambda-rust"
+    TIMING_CONF: "coq-8.9.0"
+  tags:
+  - fp-timing
+
 build-coq.8.8.2:
   <<: *template
   variables:
     OPAM_PINS: "coq version 8.8.2"
     OPAM_PKG: "coq-lambda-rust"
-    TIMING_PROJECT: "lambda-rust"
     TIMING_CONF: "coq-8.8.2"
   tags:
   - fp-timing
diff --git a/README.md b/README.md
index e842ceb75069fbbe68cc0a6e6a182ec9a868e058..8d261e3d27dbe043db9ce6ffbcfa990dafda1e55 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 8.7.2 / 8.8.2
+ - Coq 8.7.2 / 8.8.2 / 8.9.0
  - A development version of [Iris](https://gitlab.mpi-sws.org/iris/iris)
 
 ## Building from source