diff --git a/BUILDING.md b/BUILDING.md
index ec77bba0a5..186b660b76 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -14,8 +14,8 @@ Make sure you have `flatpak` and `flatkpak-builder` installed on your system.
 You also need the Gnome Runtime, SDK and some extensions:
 
 ```bash
-flatpak install org.gnome.Platform//44 org.gnome.Sdk//44 org.freedesktop.Sdk.Extension.rust-stable//22.08\
-org.freedesktop.Sdk.Extension.llvm15//22.08
+flatpak install org.gnome.Platform//45beta org.gnome.Sdk//45beta org.freedesktop.Sdk.Extension.rust-stable//23.08beta\
+org.freedesktop.Sdk.Extension.llvm16//23.08beta
 ```
 
 Use Gnome Builder or VSCode with the
diff --git a/build-aux/com.github.flxzt.rnote.Devel.json b/build-aux/com.github.flxzt.rnote.Devel.json
index 9ba1d977fb..e91ee82dc1 100644
--- a/build-aux/com.github.flxzt.rnote.Devel.json
+++ b/build-aux/com.github.flxzt.rnote.Devel.json
@@ -4,11 +4,11 @@
     "development"
   ],
   "runtime": "org.gnome.Platform",
-  "runtime-version": "44",
+  "runtime-version": "45beta",
   "sdk": "org.gnome.Sdk",
   "sdk-extensions": [
     "org.freedesktop.Sdk.Extension.rust-stable",
-    "org.freedesktop.Sdk.Extension.llvm15"
+    "org.freedesktop.Sdk.Extension.llvm16"
   ],
   "command": "rnote",
   "finish-args": [
@@ -29,7 +29,7 @@
     "--env=GST_DEBUG=3"
   ],
   "build-options": {
-    "append-path": "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm15/bin",
+    "append-path": "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm16/bin",
     "env": {
       "CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER": "clang",
       "CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS": "-C link-arg=-fuse-ld=/usr/lib/sdk/rust-stable/bin/mold",
@@ -43,7 +43,7 @@
       "--socket=x11",
       "--share=network"
     ],
-    "prepend-ld-library-path": "/usr/lib/sdk/llvm15/lib"
+    "prepend-ld-library-path": "/usr/lib/sdk/llvm16/lib"
   },
   "modules": [
     {
@@ -78,135 +78,6 @@
         }
       ]
     },
-    {
-      "name": "cairo",
-      "buildsystem": "meson",
-      "sources": [
-        {
-          "type": "git",
-          "url": "https://gitlab.freedesktop.org/cairo/cairo.git",
-          "commit": "542bfac286a945aa584f7dc2376f1f9f33b37ac9"
-        }
-      ]
-    },
-    {
-      "name": "gtk",
-      "buildsystem": "meson",
-      "config-opts": [
-        "-Dbuild-testsuite=false",
-        "-Dgtk_doc=false",
-        "-Dintrospection=disabled",
-        "-Dbuild-tests=false"
-      ],
-      "sources": [
-        {
-          "type": "archive",
-          "url": "https://download.gnome.org/sources/gtk/4.12/gtk-4.12.0.tar.xz",
-          "sha256": "a6d10829f405b1afc0b65e2a9642c04126a1d1b638d11c6d97426da4f84f1f6f",
-          "x-checker-data": {
-            "type": "gnome",
-            "name": "gtk",
-            "stable-only": false
-          }
-        }
-      ]
-    },
-    {
-      "name": "libsass",
-      "buildsystem": "meson",
-      "sources": [
-        {
-          "type": "git",
-          "url": "https://github.com/lazka/libsass.git",
-          "branch": "meson",
-          "commit": "aac79dccd3c8f7e8f22125f87a119f3b1ee9d487"
-        }
-      ]
-    },
-    {
-      "name": "sassc",
-      "buildsystem": "meson",
-      "sources": [
-        {
-          "type": "git",
-          "url": "https://github.com/lazka/sassc.git",
-          "branch": "meson",
-          "commit": "a1950c2d95ea4c051feb90bb1f43559fbb54bf36"
-        }
-      ]
-    },
-    {
-      "name": "libyaml",
-      "sources": [
-        {
-          "type": "git",
-          "url": "https://github.com/yaml/libyaml.git",
-          "commit": "2c891fc7a770e8ba2fec34fc6b545c672beb37e6"
-        }
-      ]
-    },
-    {
-      "name": "libxmlb",
-      "buildsystem": "meson",
-      "config-opts": [
-        "-Dintrospection=false",
-        "-Dgtkdoc=false",
-        "-Dstemmer=false",
-        "-Dcli=false",
-        "-Dtests=false"
-      ],
-      "sources": [
-        {
-          "type": "git",
-          "url": "https://github.com/hughsie/libxmlb.git",
-          "commit": "6191220071233972d798b57841d08e4964952a17"
-        }
-      ]
-    },
-    {
-      "name": "appstream",
-      "buildsystem": "meson",
-      "config-opts": [
-        "-Dstemming=false",
-        "-Ddocs=false",
-        "-Dgir=false"
-      ],
-      "sources": [
-        {
-          "type": "git",
-          "url": "https://github.com/ximion/appstream.git",
-          "tag": "v0.16.2",
-          "commit": "1ee6af91310f9deb47f3863a7a7ffb22c46bcce6",
-          "x-checker-data": {
-            "type": "git",
-            "tag-pattern": "^v([\\d.]+)$"
-          }
-        }
-      ]
-    },
-    {
-      "name": "libadwaita",
-      "buildsystem": "meson",
-      "config-opts": [
-        "-Dtests=false",
-        "-Dvapi=false",
-        "-Dintrospection=disabled",
-        "-Dgtk_doc=false",
-        "-Dexamples=false"
-      ],
-      "sources": [
-        {
-          "type": "archive",
-          "url": "https://download.gnome.org/sources/libadwaita/1.4/libadwaita-1.4.beta.tar.xz",
-          "sha256": "5b6a0e51fd7b6273564ce937a9d302ca683e61f05791b09a36a881d3952128a4",
-          "x-checker-data": {
-            "type": "gnome",
-            "name": "libadwaita",
-            "stable-only": false
-          }
-        }
-      ]
-    },
     {
       "name": "rnote",
       "buildsystem": "meson",
diff --git a/build-aux/com.github.flxzt.rnote.Devel.yaml b/build-aux/com.github.flxzt.rnote.Devel.yaml
index e6bae76957..d3dcaa720d 100644
--- a/build-aux/com.github.flxzt.rnote.Devel.yaml
+++ b/build-aux/com.github.flxzt.rnote.Devel.yaml
@@ -2,11 +2,11 @@ id: com.github.flxzt.rnote.Devel
 tags:
     - development
 runtime: org.gnome.Platform
-runtime-version: "44"
+runtime-version: "45beta"
 sdk: org.gnome.Sdk
 sdk-extensions:
     - org.freedesktop.Sdk.Extension.rust-stable
-    - org.freedesktop.Sdk.Extension.llvm15
+    - org.freedesktop.Sdk.Extension.llvm16
 command: rnote
 finish-args:
     - "--socket=wayland"
@@ -25,7 +25,7 @@ finish-args:
     - "--env=GTK_PATH=/app/lib/gtk-4.0"
     - "--env=GST_DEBUG=3"
 build-options:
-    append-path: "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm15/bin"
+    append-path: "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm16/bin"
     env:
         CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER: clang
         CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS: "-C link-arg=-fuse-ld=/usr/lib/sdk/rust-stable/bin/mold"
@@ -36,7 +36,7 @@ build-options:
     test-args:
         - "--socket=x11"
         - "--share=network"
-    prepend-ld-library-path: /usr/lib/sdk/llvm15/lib
+    prepend-ld-library-path: /usr/lib/sdk/llvm16/lib
 modules:
     - name: poppler
       buildsystem: cmake-ninja
@@ -58,88 +58,6 @@ modules:
           - type: archive
             url: "https://poppler.freedesktop.org/poppler-data-0.4.12.tar.gz"
             sha256: c835b640a40ce357e1b83666aabd95edffa24ddddd49b8daff63adb851cdab74
-    - name: cairo
-      buildsystem: meson
-      sources:
-          - type: git
-            url: https://gitlab.freedesktop.org/cairo/cairo.git
-            commit: 542bfac286a945aa584f7dc2376f1f9f33b37ac9
-    - name: gtk
-      buildsystem: meson
-      config-opts:
-          - -Dbuild-testsuite=false
-          - -Dgtk_doc=false
-          - -Dintrospection=disabled
-          - -Dbuild-tests=false
-      sources:
-          - type: archive
-            url: https://download.gnome.org/sources/gtk/4.12/gtk-4.12.0.tar.xz
-            sha256: a6d10829f405b1afc0b65e2a9642c04126a1d1b638d11c6d97426da4f84f1f6f
-            x-checker-data:
-                type: gnome
-                name: gtk
-                stable-only: false
-    - name: libsass
-      buildsystem: meson
-      sources:
-          - type: git
-            url: https://github.com/lazka/libsass.git
-            branch: meson
-            commit: aac79dccd3c8f7e8f22125f87a119f3b1ee9d487
-    - name: sassc
-      buildsystem: meson
-      sources:
-          - type: git
-            url: https://github.com/lazka/sassc.git
-            branch: meson
-            commit: a1950c2d95ea4c051feb90bb1f43559fbb54bf36
-    - name: libyaml
-      sources:
-          - type: git
-            url: https://github.com/yaml/libyaml.git
-            commit: 2c891fc7a770e8ba2fec34fc6b545c672beb37e6
-    - name: libxmlb
-      buildsystem: meson
-      config-opts:
-          - -Dintrospection=false
-          - -Dgtkdoc=false
-          - -Dstemmer=false
-          - -Dcli=false
-          - -Dtests=false
-      sources:
-          - type: git
-            url: https://github.com/hughsie/libxmlb.git
-            commit: 6191220071233972d798b57841d08e4964952a17
-    - name: appstream
-      buildsystem: meson
-      config-opts:
-          - -Dstemming=false
-          - -Ddocs=false
-          - -Dgir=false
-      sources:
-          - type: git
-            url: https://github.com/ximion/appstream.git
-            tag: v0.16.2
-            commit: 1ee6af91310f9deb47f3863a7a7ffb22c46bcce6
-            x-checker-data:
-                type: git
-                tag-pattern: ^v([\d.]+)$
-    - name: libadwaita
-      buildsystem: meson
-      config-opts:
-          - -Dtests=false
-          - -Dvapi=false
-          - -Dintrospection=disabled
-          - -Dgtk_doc=false
-          - -Dexamples=false
-      sources:
-          - type: archive
-            url: https://download.gnome.org/sources/libadwaita/1.4/libadwaita-1.4.beta.tar.xz
-            sha256: 5b6a0e51fd7b6273564ce937a9d302ca683e61f05791b09a36a881d3952128a4
-            x-checker-data:
-                type: gnome
-                name: libadwaita
-                stable-only: false
     - name: rnote
       buildsystem: meson
       run-tests: true