diff --git a/manifest.toml b/manifest.toml
index f640a15..72ff53c 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -48,14 +48,14 @@ ram.runtime = "50M"
         sha256 = "fc6f54d37993f74e057d1a59438e21b68a8cff1a7f9438415459ede7cf7f09d0"
         in_subdir = true
         extract   = true
-        format = zip
+        format = "zip"
 
         [resources.sources.front]
         url = "https://dev.funkwhale.audio/funkwhale/funkwhale/builds/artifacts/1.2.10/download?job=build_front"
         sha256 = "bcf0ba380295be58dfcfe4d88605cfce357859adf623c8236fb1182095c38bfd"
         in_subdir = true
         extract   = true
-        format = zip
+        format = "zip"
 
     [resources.ports]