diff --git a/metadata/krillefear.funwithkanji.yml b/metadata/krillefear.funwithkanji.yml
index c0f2157aba..1a2b0fee67 100644
--- a/metadata/krillefear.funwithkanji.yml
+++ b/metadata/krillefear.funwithkanji.yml
@@ -183,7 +183,7 @@ Builds:
       - apt-get install -y ninja-build
     output: build/app/outputs/flutter-apk/app-release.apk
     srclibs:
-      - flutter@3.3.8
+      - flutter@3.7.7
     rm:
       - ios
       - linux
@@ -191,9 +191,14 @@ Builds:
       - test
       - web
       - windows
-    prebuild: sdkmanager 'cmake;3.18.1'
-    build:
+    prebuild:
+      - sdkmanager 'cmake;3.18.1'
+      - export PUB_CACHE=$(pwd)/.pub-cache
       - $$flutter$$/bin/flutter config --no-analytics
+    scandelete:
+      - .pub-cache
+    build:
+      - export PUB_CACHE=$(pwd)/.pub-cache
       - $$flutter$$/bin/flutter build apk --release
     ndk: r21e