diff --git a/cohttp-lwt-unix.opam b/cohttp-lwt-unix.opam
index 26b3a42dc..ef1c6eed9 100644
--- a/cohttp-lwt-unix.opam
+++ b/cohttp-lwt-unix.opam
@@ -59,3 +59,6 @@ build: [
     "@doc" {with-doc}
   ]
 ]
+pin-depends: [
+  [ "ca-certs.dev"         "git+https://github.com/art-w/ca-certs.git#95d1250bdce4225cb92c345ba5d8f180e237eb2b" ]
+]
diff --git a/cohttp-lwt-unix.opam.template b/cohttp-lwt-unix.opam.template
index 75ab83a7c..d56487a72 100644
--- a/cohttp-lwt-unix.opam.template
+++ b/cohttp-lwt-unix.opam.template
@@ -12,3 +12,6 @@ build: [
     "@doc" {with-doc}
   ]
 ]
+pin-depends: [
+  [ "ca-certs.dev"         "git+https://github.com/art-w/ca-certs.git#95d1250bdce4225cb92c345ba5d8f180e237eb2b" ]
+]