diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4bc8676b5fedce96fb3edfa3e27a9d0fbfd30462..68210b2bcaf7238d551d428e6b7e5c6c3e62ee43 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -52,11 +52,6 @@ build-coq.8.10.2:
   variables:
     OPAM_PINS: "coq version 8.10.2"
 
-build-coq.8.9.1:
-  <<: *template
-  variables:
-    OPAM_PINS: "coq version 8.9.1"
-
 # Nightly job with a known-to-work Coq version
 # (so failures must be caused by std++)
 build-stdpp.dev-coq.8.11.2:
diff --git a/README.md b/README.md
index 5087fd10bc12c18bca9665ea42ba8be5ccbf05ba..2b7c7639ad320bfe92d792d1cc1400bcfac194c5 100644
--- a/README.md
+++ b/README.md
@@ -18,11 +18,13 @@ definitions and some derived forms is available in
 
 This version is known to compile with:
 
- - Coq 8.9.1 / 8.10.2 / 8.11.2 / 8.12.0
+ - Coq 8.10.2 / 8.11.2 / 8.12.0
  - A development version of [std++](https://gitlab.mpi-sws.org/iris/stdpp)
 
 If you need to work with Coq 8.7 or Coq 8.8, please check out the
 [iris-3.2 branch](https://gitlab.mpi-sws.org/iris/iris/tree/iris-3.2).
+For Coq 8.9, you can use the
+[iris-3.3 branch](https://gitlab.mpi-sws.org/iris/iris/tree/iris-3.3).
 
 ### Working *with* Iris
 
diff --git a/opam b/opam
index 6ecc832c26d9c0aa70a2bccbe88e92bb8db55f58..ef5261a2bcf419c77284a57feff585ce5e7c73db 100644
--- a/opam
+++ b/opam
@@ -10,7 +10,7 @@ dev-repo: "git+https://gitlab.mpi-sws.org/iris/iris.git"
 synopsis: "Iris is a Higher-Order Concurrent Separation Logic Framework with support for interactive proofs"
 
 depends: [
-  "coq" { (>= "8.9.1" & < "8.13~") | (= "dev") }
+  "coq" { (>= "8.10.2" & < "8.13~") | (= "dev") }
   "coq-stdpp" { (= "dev.2020-08-07.0.67db2f24") | (= "dev") }
 ]