diff --git a/images.json b/images.json
index 8e57bd6ee..d4bfaeb14 100644
--- a/images.json
+++ b/images.json
@@ -289,7 +289,7 @@
       {
         "name": "horizon",
         "repo": "stellar/stellar-horizon",
-        "ref": "main",
+        "ref": "protocol-next",
         "options": {
           "pkg": "github.com/stellar/stellar-horizon"
         }
@@ -310,7 +310,7 @@
       {
         "name": "galexie",
         "repo": "stellar/stellar-galexie",
-        "ref": "main"
+        "ref": "protocol-next"
       }
     ],
     "tests": {