diff --git a/ci/ci-install.bash b/ci/ci-install.bash
index 576b39974..2e7325cea 100755
--- a/ci/ci-install.bash
+++ b/ci/ci-install.bash
@@ -21,6 +21,7 @@ cd $(dirname "$0")/..
 
 # Avoid occasional cpan failures "Issued certificate has expired."
 export PERL_LWP_SSL_VERIFY_HOSTNAME=0
+echo "check_certificate = off" >> ~/.wgetrc
 
 fatal() {
   echo "ERROR: $(basename "$0"): $1" >&2; exit 1;