diff --git a/ci/ci-install.bash b/ci/ci-install.bash
index 4f61f06c4..576b39974 100755
--- a/ci/ci-install.bash
+++ b/ci/ci-install.bash
@@ -19,6 +19,9 @@ set -x
 
 cd $(dirname "$0")/..
 
+# Avoid occasional cpan failures "Issued certificate has expired."
+export PERL_LWP_SSL_VERIFY_HOSTNAME=0
+
 fatal() {
   echo "ERROR: $(basename "$0"): $1" >&2; exit 1;
 }