diff --git a/.github/workflows/docker-action.yml b/.github/workflows/docker-action.yml
index 44bd96f..90c8460 100644
--- a/.github/workflows/docker-action.yml
+++ b/.github/workflows/docker-action.yml
@@ -18,6 +18,7 @@ jobs:
       matrix:
         image:
           - 'coqorg/coq:dev'
+          - 'coqorg/coq:8.17'
           - 'coqorg/coq:8.16'
           - 'coqorg/coq:8.15'
           - 'coqorg/coq:8.14'
@@ -26,7 +27,7 @@ jobs:
           - 'coqorg/coq:8.11'
       fail-fast: false
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: coq-community/docker-coq-action@v1
         with:
           opam_file: 'coq-math-classes.opam'
@@ -37,6 +38,7 @@ jobs:
               opam config list; opam repo list; opam list
             endGroup
 
+
 # See also:
 # https://github.com/coq-community/docker-coq-action#readme
 # https://github.com/erikmd/docker-coq-github-action-demo
diff --git a/coq-math-classes.opam b/coq-math-classes.opam
index c627b25..008c822 100644
--- a/coq-math-classes.opam
+++ b/coq-math-classes.opam
@@ -30,7 +30,7 @@ build: [
 ]
 install: [make "install"]
 depends: [
-  "coq" {(>= "8.11" & < "8.17~") | (= "dev")}
+  "coq" {(>= "8.11" & < "8.18~") | (= "dev")}
   "coq-bignums" 
 ]
 
diff --git a/default.nix b/default.nix
deleted file mode 100644
index aa51907..0000000
--- a/default.nix
+++ /dev/null
@@ -1,26 +0,0 @@
-{ pkgs ? (import <nixpkgs> {}), coq-version-or-url, shell ? false }:
-
-let
-  coq-version-parts = builtins.match "([0-9]+).([0-9]+)" coq-version-or-url;
-  coqPackages =
-    if coq-version-parts == null then
-      pkgs.mkCoqPackages (import (fetchTarball coq-version-or-url) {})
-    else
-      pkgs."coqPackages_${builtins.concatStringsSep "_" coq-version-parts}";
-in
-
-with coqPackages;
-
-pkgs.stdenv.mkDerivation {
-
-  name = "math-classes";
-
-  propagatedBuildInputs = [
-    coq
-    bignums
-  ];
-
-  src = if shell then null else ./.;
-
-  installFlags = "COQMF_COQLIB=$(out)/lib/coq/${coq.coq-version}/";
-}
diff --git a/meta.yml b/meta.yml
index 4178bd6..ff2c729 100644
--- a/meta.yml
+++ b/meta.yml
@@ -50,10 +50,11 @@ license:
 
 supported_coq_versions:
   text: Coq 8.11 or later (use releases for other Coq versions)
-  opam: '{(>= "8.11" & < "8.17~") | (= "dev")}'
+  opam: '{(>= "8.11" & < "8.18~") | (= "dev")}'
 
 tested_coq_opam_versions:
 - version: dev
+- version: "8.17"
 - version: "8.16"
 - version: "8.15"
 - version: "8.14"