diff --git a/.github/workflows/docker-action.yml b/.github/workflows/docker-action.yml
index 9e1821f..2b71de1 100644
--- a/.github/workflows/docker-action.yml
+++ b/.github/workflows/docker-action.yml
@@ -24,13 +24,16 @@ jobs:
           - 'mathcomp/mathcomp:2.2.0-coq-8.17'
           - 'mathcomp/mathcomp:2.2.0-coq-8.18'
           - 'mathcomp/mathcomp:2.2.0-coq-8.19'
-          - 'mathcomp/mathcomp:2.2.0-coq-dev'
+          - 'mathcomp/mathcomp:2.2.0-coq-8.20'
+          - 'mathcomp/mathcomp:2.3.0-coq-8.20'
+          - 'mathcomp/mathcomp:2.3.0-coq-dev'
           - 'mathcomp/mathcomp-dev:coq-8.18'
           - 'mathcomp/mathcomp-dev:coq-8.19'
+          - 'mathcomp/mathcomp-dev:coq-8.20'
           - 'mathcomp/mathcomp-dev:coq-dev'
       fail-fast: false
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: coq-community/docker-coq-action@v1
         with:
           opam_file: 'coq-coqeal.opam'
diff --git a/coq-coqeal.opam b/coq-coqeal.opam
index 2ede11a..bb3e789 100644
--- a/coq-coqeal.opam
+++ b/coq-coqeal.opam
@@ -21,7 +21,7 @@ of the ForMath EU FP7 project (2009-2013). It has two parts:
 build: [make "-j%{jobs}%"]
 install: [make "install"]
 depends: [
-  "coq" {(>= "8.16" & < "8.20~") | (= "dev")}
+  "coq" {(>= "8.16" & < "8.21~") | (= "dev")}
   "coq-bignums" 
   "coq-paramcoq" {>= "1.1.3"}
   "coq-hierarchy-builder" {>= "1.4.0"}
diff --git a/meta.yml b/meta.yml
index 520ff9c..bcd1ded 100644
--- a/meta.yml
+++ b/meta.yml
@@ -77,7 +77,7 @@ license:
 
 supported_coq_versions:
   text: 8.16 or later (use releases for other Coq versions)
-  opam: '{(>= "8.16" & < "8.20~") | (= "dev")}'
+  opam: '{(>= "8.16" & < "8.21~") | (= "dev")}'
 
 dependencies:
 - opam:
@@ -129,16 +129,18 @@ tested_coq_opam_versions:
   repo: 'mathcomp/mathcomp'
 - version: '2.2.0-coq-8.19'
   repo: 'mathcomp/mathcomp'
-- version: '2.2.0-coq-dev'
+- version: '2.2.0-coq-8.20'
+  repo: 'mathcomp/mathcomp'
+- version: '2.3.0-coq-8.20'
+  repo: 'mathcomp/mathcomp'
+- version: '2.3.0-coq-dev'
   repo: 'mathcomp/mathcomp'
-- version: 'coq-8.16'
-  repo: 'mathcomp/mathcomp-dev'
-- version: 'coq-8.17'
-  repo: 'mathcomp/mathcomp-dev'
 - version: 'coq-8.18'
   repo: 'mathcomp/mathcomp-dev'
 - version: 'coq-8.19'
   repo: 'mathcomp/mathcomp-dev'
+- version: 'coq-8.20'
+  repo: 'mathcomp/mathcomp-dev'
 - version: 'coq-dev'
   repo: 'mathcomp/mathcomp-dev'