diff --git a/data/hu.kramo.Cartridges.metainfo.xml.in b/data/hu.kramo.Cartridges.metainfo.xml.in
index a0923eb..2af5bde 100644
--- a/data/hu.kramo.Cartridges.metainfo.xml.in
+++ b/data/hu.kramo.Cartridges.metainfo.xml.in
@@ -34,4 +34,5 @@
       <caption>Preferences</caption>
     </screenshot>
   </screenshots>
+  <content_rating type="oars-1.1" />
 </component>
diff --git a/hu.kramo.Cartridges.json b/hu.kramo.Cartridges.json
index 90308bb..a79949d 100644
--- a/hu.kramo.Cartridges.json
+++ b/hu.kramo.Cartridges.json
@@ -1,5 +1,5 @@
 {
-    "app-id" : "hu.kramo.Cartridges",
+    "id" : "hu.kramo.Cartridges",
     "runtime" : "org.gnome.Platform",
     "runtime-version" : "44",
     "sdk" : "org.gnome.Sdk",
@@ -31,7 +31,20 @@
         "*.a"
     ],
     "modules" : [
-        "python3-modules.json",
+        {
+            "name": "python3-pyyaml",
+            "buildsystem": "simple",
+            "build-commands": [
+                "pip3 install --verbose --exists-action=i --no-index --find-links=\"file://${PWD}\" --prefix=${FLATPAK_DEST} \"pyyaml\" --no-build-isolation"
+            ],
+            "sources": [
+                {
+                    "type": "file",
+                    "url": "https://files.pythonhosted.org/packages/36/2b/61d51a2c4f25ef062ae3f74576b01638bebad5e045f747ff12643df63844/PyYAML-6.0.tar.gz",
+                    "sha256": "68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2"
+                }
+            ]
+        },
         {
             "name" : "blueprint-compiler",
             "buildsystem" : "meson",
diff --git a/python3-modules.json b/python3-modules.json
deleted file mode 100644
index bfa1a0a..0000000
--- a/python3-modules.json
+++ /dev/null
@@ -1,21 +0,0 @@
-{
-    "name": "python3-modules",
-    "buildsystem": "simple",
-    "build-commands": [],
-    "modules": [
-        {
-            "name": "python3-pyyaml",
-            "buildsystem": "simple",
-            "build-commands": [
-                "pip3 install --verbose --exists-action=i --no-index --find-links=\"file://${PWD}\" --prefix=${FLATPAK_DEST} \"pyyaml\" --no-build-isolation"
-            ],
-            "sources": [
-                {
-                    "type": "file",
-                    "url": "https://files.pythonhosted.org/packages/36/2b/61d51a2c4f25ef062ae3f74576b01638bebad5e045f747ff12643df63844/PyYAML-6.0.tar.gz",
-                    "sha256": "68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2"
-                }
-            ]
-        }
-    ]
-}
\ No newline at end of file