diff --git a/.github/workflows/docker-action.yml b/.github/workflows/docker-action.yml
deleted file mode 100644
index 55c53e9..0000000
--- a/.github/workflows/docker-action.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: Docker CI
-
-on:
-  push:
-    branches:
-      - master
-    paths-ignore:
-      - 'resources/**'
-  pull_request:
-    branches:
-      - '**'
-    paths-ignore:
-      - 'resources/**'
-
-jobs:
-  build:
-    # the OS must be GNU/Linux to be able to use the docker-coq-action
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        image:
-          - 'coqorg/coq:dev'
-      fail-fast: false
-    steps:
-      - uses: actions/checkout@v3
-      - uses: coq-community/docker-coq-action@v1
-        with:
-          opam_file: 'coq-atbr.opam'
-          custom_image: ${{ matrix.image }}
-
-
-# See also:
-# https://github.com/coq-community/docker-coq-action#readme
-# https://github.com/erikmd/docker-coq-github-action-demo
diff --git a/README.md b/README.md
index 0f1b566..0ef5222 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,8 @@ Follow the instructions on https://github.com/coq-community/templates to regener
 [![coqdoc][coqdoc-shield]][coqdoc-link]
 [![DOI][doi-shield]][doi-link]
 
-[docker-action-shield]: https://github.com/coq-community/atbr/workflows/Docker%20CI/badge.svg?branch=master
-[docker-action-link]: https://github.com/coq-community/atbr/actions?query=workflow:"Docker%20CI"
+[docker-action-shield]: https://github.com/coq-community/atbr/actions/workflows/docker-action.yml/badge.svg?branch=v8.19
+[docker-action-link]: https://github.com/coq-community/atbr/actions/workflows/docker-action.yml
 
 [contributing-shield]: https://img.shields.io/badge/contributions-welcome-%23f7931e.svg
 [contributing-link]: https://github.com/coq-community/manifesto/blob/master/CONTRIBUTING.md
@@ -46,7 +46,7 @@ rather than automata: https://github.com/damien-pous/relation-algebra
 - Coq-community maintainer(s):
   - Tej Chajed ([**@tchajed**](https://github.com/tchajed))
 - License: [GNU Lesser General Public License v3.0 or later](LICENSE)
-- Compatible Coq versions: master (use the corresponding branch or release for other Coq versions)
+- Compatible Coq versions: 8.19 (use the corresponding branch or release for other Coq versions)
 - Compatible OCaml versions: 4.09.0 or later
 - Additional dependencies: none
 - Coq namespace: `ATBR`
diff --git a/coq-atbr.opam b/coq-atbr.opam
index a9ceb7d..f226011 100644
--- a/coq-atbr.opam
+++ b/coq-atbr.opam
@@ -3,7 +3,7 @@
 
 opam-version: "2.0"
 maintainer: "palmskog@gmail.com"
-version: "dev"
+version: "8.19.dev"
 
 homepage: "https://github.com/coq-community/atbr"
 dev-repo: "git+https://github.com/coq-community/atbr.git"
@@ -26,7 +26,7 @@ build: [make "-j%{jobs}%"]
 install: [make "install"]
 depends: [
   "ocaml" {>= "4.09.0"}
-  "coq" {= "dev"}
+  "coq" {>= "8.19" & < "8.20"}
 ]
 
 tags: [
diff --git a/meta.yml b/meta.yml
index 3efbbdb..155de62 100644
--- a/meta.yml
+++ b/meta.yml
@@ -7,6 +7,7 @@ action: true
 coqdoc: true
 doi: 10.2168/LMCS-8(1:16)2012
 plugin: true
+branch: 'v8.19'
 
 synopsis: Coq library and tactic for deciding Kleene algebras
 
@@ -37,22 +38,25 @@ maintainers:
 
 opam-file-maintainer: palmskog@gmail.com
 
-opam-file-version: dev
+opam-file-version: 8.19.dev
 
 license:
   fullname: GNU Lesser General Public License v3.0 or later
   identifier: LGPL-3.0-or-later
 
 supported_coq_versions:
-  text: master (use the corresponding branch or release for other Coq versions)
-  opam: '{= "dev"}'
+  text: 8.19 (use the corresponding branch or release for other Coq versions)
+  opam: '{>= "8.19" & < "8.20"}'
 
 supported_ocaml_versions:
     text: 4.09.0 or later
     opam: '{>= "4.09.0"}'
 
 tested_coq_opam_versions:
-- version: 'dev'
+- version: '8.19'
+
+tested_coq_nix_versions:
+- coq_version: '8.19'
 
 namespace: ATBR