diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ee23c2f93cc4d37ff193550c12d57a26f51f5b6e..9c8e4a75a6f19d0ed449021bf2f4ac9bb9181789 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,9 +13,9 @@ flatpak:
 
   script:
   - apk update && apk add flatpak-builder
-  - flatpak remote-add --if-not-exists gnome-nightly https://nightly.gnome.org/gnome-nightly.flatpakrepo
-  - flatpak install -y flathub org.gnome.Platform master
-  - flatpak install -y flathub org.gnome.Sdk master
+  - flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+  - flatpak install -y flathub org.gnome.Platform 42
+  - flatpak install -y flathub org.gnome.Sdk 42
   - flatpak-builder --stop-at=${FLATPAK_MODULE} app ${MANIFEST_PATH}
   - flatpak build app meson --prefix=/app ${MESON_ARGS} _build
   - flatpak build app ninja -C _build install
diff --git a/build-aux/uk.me.bcowan.Rugby.yml b/build-aux/uk.me.bcowan.Rugby.yml
index f904abbf2a4ff3eccd2f81ff2a9f23acb7e6fa47..016f8db44e92fc95be16def736f307024d6f1d4c 100644
--- a/build-aux/uk.me.bcowan.Rugby.yml
+++ b/build-aux/uk.me.bcowan.Rugby.yml
@@ -4,7 +4,7 @@
 
 app-id: uk.me.bcowan.Rugby
 runtime: org.gnome.Platform
-runtime-version: "master"
+runtime-version: "42"
 sdk: org.gnome.Sdk
 command: rugby
 
diff --git a/data/interface.ui b/data/interface.ui
index 5f4e2866888e5f5f7e133c9e02afaa0d0b3f5a50..42bd47054faa2147ca2f421ce38a4f24ac9c9e08 100644
--- a/data/interface.ui
+++ b/data/interface.ui
@@ -26,7 +26,7 @@
     <property name="default-height">600</property>
     <property name="default-width">400</property>
     <style>
-        <class name="devel"/>
+      <class name="devel"/>
     </style>
     <child>
       <object class="GtkScrolledWindow">