diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3bd84cc5..ef710005 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
       with:
         ocaml-version: ${{ matrix.ocaml-version }}
     - run: opam pin -n .
-    - run: opam depext -yt tiny_httpd
+    - run: opam depext -yt tiny_httpd tiny_httpd_camlzip
     - run: opam install -t . --deps-only
     - run: opam exec -- dune build
     - run: opam exec -- dune runtest
diff --git a/tiny_httpd_camlzip.opam b/tiny_httpd_camlzip.opam
index 82c93f24..95d0ac22 100644
--- a/tiny_httpd_camlzip.opam
+++ b/tiny_httpd_camlzip.opam
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "0.1"
+version: "0.4"
 authors: ["Simon Cruanes"]
 maintainer: "simon.cruanes.2007@m4x.org"
 license: "MIT"