diff --git a/metadata/us.spotco.fennec_dos.yml b/metadata/us.spotco.fennec_dos.yml
index bae7e15db6..6de98e5d03 100644
--- a/metadata/us.spotco.fennec_dos.yml
+++ b/metadata/us.spotco.fennec_dos.yml
@@ -1140,7 +1140,7 @@ Builds:
       - FirefoxAndroid@v107.0.7
       - MozAndroidComponentsAS@v104.0.2
       - MozAppServices@v94.2.2
-      - MullBuild@v107.1.0
+      - MullBuild@v107.1.0-ff
       - MozFennec@FIREFOX_107_0_RELEASE
       - MozGlean@v51.4.0
       - MozGleanAS@v51.2.0
@@ -1164,7 +1164,7 @@ Builds:
       - FirefoxAndroid@v107.0.7
       - MozAndroidComponentsAS@v104.0.2
       - MozAppServices@v94.2.2
-      - MullBuild@v107.1.0
+      - MullBuild@v107.1.0-ff
       - MozFennec@FIREFOX_107_0_RELEASE
       - MozGlean@v51.4.0
       - MozGleanAS@v51.2.0