diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6dce9149c..f08c9412f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -43,7 +43,6 @@ jobs:
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
           dune-cache: true
-          opam-depext: true
           opam-pin: true
           allow-prerelease-opam: false
       - name: depext
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 8228d596f..cffbc526b 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -31,7 +31,6 @@ jobs:
         with:
           ocaml-compiler: "5.2"
           dune-cache: false
-          opam-depext: true
           opam-pin: true
           allow-prerelease-opam: false
       - name: depext