diff --git a/deployer.opam b/deployer.opam
index 386815f..0564195 100644
--- a/deployer.opam
+++ b/deployer.opam
@@ -61,3 +61,5 @@ build: [
   ]
 ]
 dev-repo: "git+https://github.com/ocurrent/ocurrent-deployer.git"
+# See https://github.com/ocurrent/ocaml-ci/issues/931
+available: !(os-distribution = "debian" & os-version = "12" & arch = "x86_32")
diff --git a/deployer.opam.template b/deployer.opam.template
new file mode 100644
index 0000000..c664ab3
--- /dev/null
+++ b/deployer.opam.template
@@ -0,0 +1,2 @@
+# See https://github.com/ocurrent/ocaml-ci/issues/931
+available: !(os-distribution = "debian" & os-version = "12" & arch = "x86_32")