diff --git a/testing/tests/ike/rw-cert/hosts/moon/etc/strongswan.conf b/testing/tests/ike/rw-cert/hosts/moon/etc/strongswan.conf
index fd99f7eef..bdb0f2a88 100644
--- a/testing/tests/ike/rw-cert/hosts/moon/etc/strongswan.conf
+++ b/testing/tests/ike/rw-cert/hosts/moon/etc/strongswan.conf
@@ -5,5 +5,5 @@ charon {
 }
 
 pluto {
-  load = curl aes des sha1 sha2 md5 random hmac
+  load = curl aes des sha1 sha2 md5 gmp random hmac
 }
diff --git a/testing/tests/ike/rw_v1-net_v2/hosts/moon/etc/strongswan.conf b/testing/tests/ike/rw_v1-net_v2/hosts/moon/etc/strongswan.conf
index fd99f7eef..bdb0f2a88 100644
--- a/testing/tests/ike/rw_v1-net_v2/hosts/moon/etc/strongswan.conf
+++ b/testing/tests/ike/rw_v1-net_v2/hosts/moon/etc/strongswan.conf
@@ -5,5 +5,5 @@ charon {
 }
 
 pluto {
-  load = curl aes des sha1 sha2 md5 random hmac
+  load = curl aes des sha1 sha2 md5 gmp random hmac
 }