diff --git a/.github/workflows/rolling-release.yml b/.github/workflows/rolling-release.yml
index e1e7c554f..7e1e811bd 100644
--- a/.github/workflows/rolling-release.yml
+++ b/.github/workflows/rolling-release.yml
@@ -21,6 +21,7 @@ on:
 jobs:
   windows-build:
     runs-on: windows-2022
+    timeout-minutes: 120
     steps:
     - uses: actions/checkout@v2.3.1
       with:
@@ -112,6 +113,7 @@ jobs:
 
   windows-arm64-build:
     runs-on: windows-2022
+    timeout-minutes: 120
     steps:
     - uses: actions/checkout@v2.3.1
       with:
@@ -203,6 +205,7 @@ jobs:
 
   linux-build:
     runs-on: ubuntu-22.04
+    timeout-minutes: 120
     steps:
     # Work around https://github.com/actions/runner-images/issues/8659
     - name: Remove GCC 13 from runner image
@@ -278,6 +281,7 @@ jobs:
 
   linux-flatpak-build:
     runs-on: ubuntu-22.04
+    timeout-minutes: 120
     steps:
     - uses: actions/checkout@v3
       with:
@@ -321,6 +325,7 @@ jobs:
 
   macos-build:
     runs-on: macos-11
+    timeout-minutes: 120
     steps:
     - uses: actions/checkout@v2.3.1
       with:
diff --git a/scripts/build-dependencies-mac.sh b/scripts/build-dependencies-mac.sh
index 45a8392f2..91163dc78 100755
--- a/scripts/build-dependencies-mac.sh
+++ b/scripts/build-dependencies-mac.sh
@@ -6,8 +6,8 @@ export MACOSX_DEPLOYMENT_TARGET=11.0
 INSTALLDIR="$HOME/deps"
 NPROCS="$(getconf _NPROCESSORS_ONLN)"
 SDL=SDL2-2.28.5
-QT=6.5.3
-MOLTENVK=1.2.5
+QT=6.6.1
+MOLTENVK=1.2.6
 
 mkdir -p deps-build
 cd deps-build
@@ -19,12 +19,12 @@ export CXXFLAGS="-I$INSTALLDIR/include -Os $CXXFLAGS"
 
 cat > SHASUMS <<EOF
 332cb37d0be20cb9541739c61f79bae5a477427d79ae85e352089afdaf6666e4  $SDL.tar.gz
-946d8f0e7ae3b47774b03a610d3a3e7e4bcbef3e667e1362325936839035a115  v$MOLTENVK.tar.gz
-df2f4a230be4ea04f9798f2c19ab1413a3b8ec6a80bef359f50284235307b546  qtbase-everywhere-src-$QT.tar.xz
-49c026c49a738ed024c072a4b205cdc1235507da4a2d0ea740bd574fff138ccb  qtimageformats-everywhere-src-$QT.tar.xz
-fc41c47b69ca1f80473cd4b11996394155781105345392961d064d04f95d5bef  qtsvg-everywhere-src-$QT.tar.xz
-fc91d32b3f696725bbb48b0df240c25b606bbee3bd22627cfcbee876a6405e37  qttools-everywhere-src-$QT.tar.xz
-83b44c0ddcf9c28e836f63c21a3fea2fb2c24cb630eefc79984f5bec44e949e3  qttranslations-everywhere-src-$QT.tar.xz
+b6a3d179aa9c41275ed0e35e502e5e3fd347dbe5117a0435a26868b231cd6246  v$MOLTENVK.tar.gz
+450c5b4677b2fe40ed07954d7f0f40690068e80a94c9df86c2c905ccd59d02f7  qtbase-everywhere-src-$QT.tar.xz
+ac4ed08950072e375be662cfa64fdb447dd6e935cf29c56a4128d1500492188f  qtimageformats-everywhere-src-$QT.tar.xz
+248deb56d26a463cf3162f530358ccf90cfb654bbf518bb35ddf81b205e09228  qtsvg-everywhere-src-$QT.tar.xz
+4939105a7345ab4e19e7caee8654a836e65bd41910359623e0f233f3aff0914a  qttools-everywhere-src-$QT.tar.xz
+668702e822ad7150b27e7caa2158595fd9b3b77ffbc8262e6509872a3920ee88  qttranslations-everywhere-src-$QT.tar.xz
 EOF
 
 curl -L \
diff --git a/scripts/build-dependencies-windows-arm64.bat b/scripts/build-dependencies-windows-arm64.bat
index 8880618f8..beb05f63c 100644
--- a/scripts/build-dependencies-windows-arm64.bat
+++ b/scripts/build-dependencies-windows-arm64.bat
@@ -41,16 +41,16 @@ echo INSTALLDIR=%INSTALLDIR%
 
 cd "%BUILDDIR%"
 
-set QT=6.5.3
-set QTMINOR=6.5
+set QT=6.6.1
+set QTMINOR=6.6
 set SDL=SDL2-2.28.5
 
 call :downloadfile "%SDL%.zip" "https://libsdl.org/release/%SDL%.zip" 97bd14ee0ec67494d2b93f1a4f7da2bf891103c57090d96fdcc2b019d885c76a || goto error
-call :downloadfile "qtbase-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtbase-everywhere-src-%QT%.zip" a1e47c6ca4807d15725a38a62da2f0f6f51be051ba2196e8358afadd21d2c521 || goto error
-call :downloadfile "qtimageformats-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtimageformats-everywhere-src-%QT%.zip" 3e5c7247a3a012173d4d86d04940804336b58d74ad1779bb15395143a1baa898 || goto error
-call :downloadfile "qtsvg-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtsvg-everywhere-src-%QT%.zip" 395bd2edf129705504f59cd6d6f641fd2b3bda5a77718ab448a836b35e238053 || goto error
-call :downloadfile "qttools-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttools-everywhere-src-%QT%.zip" 48ff92781a5eaad10e341ee4fa1c91bca05a76a1782ebb2780dc38b2c8caedbb || goto error
-call :downloadfile "qttranslations-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttranslations-everywhere-src-%QT%.zip" fb1dbc65df6d1537ba3c6428ee3ff8149026d2ab5d201c2902d857766c1e4470 || goto error
+call :downloadfile "qtbase-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtbase-everywhere-src-%QT%.zip" 818f92518d1a89ee98ae818891a7d2f0e41aa45b933d55215da2df6d5459428e || goto error
+call :downloadfile "qtimageformats-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtimageformats-everywhere-src-%QT%.zip" 03f01042f86b4dbf7329a179f20835817c660a183178c11570cc0535b3c3ba58 || goto error
+call :downloadfile "qtsvg-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtsvg-everywhere-src-%QT%.zip" d44d5ead8d4682f54c91687b5e32f2735f086419e3889e05609feae1a7f02da9 || goto error
+call :downloadfile "qttools-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttools-everywhere-src-%QT%.zip" a17eba4e1c00dbd62c13d708c2bc918c2954b2b25a94d3c05e891d62e8f187c8 || goto error
+call :downloadfile "qttranslations-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttranslations-everywhere-src-%QT%.zip" e5ccf0eefd6b1ef9604fdf57f6d16ad8484d07fb141ca3a2d9c3f1771296ae25 || goto error
 
 if %DEBUG%==1 (
   echo Building debug and release libraries...
diff --git a/scripts/build-dependencies-windows-x64.bat b/scripts/build-dependencies-windows-x64.bat
index 69a4ae03d..3bc14a8bd 100644
--- a/scripts/build-dependencies-windows-x64.bat
+++ b/scripts/build-dependencies-windows-x64.bat
@@ -37,16 +37,16 @@ echo INSTALLDIR=%INSTALLDIR%
 
 cd "%BUILDDIR%"
 
-set QT=6.5.3
-set QTMINOR=6.5
+set QT=6.6.1
+set QTMINOR=6.6
 set SDL=SDL2-2.28.5
 
 call :downloadfile "%SDL%.zip" "https://libsdl.org/release/%SDL%.zip" 97bd14ee0ec67494d2b93f1a4f7da2bf891103c57090d96fdcc2b019d885c76a || goto error
-call :downloadfile "qtbase-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtbase-everywhere-src-%QT%.zip" a1e47c6ca4807d15725a38a62da2f0f6f51be051ba2196e8358afadd21d2c521 || goto error
-call :downloadfile "qtimageformats-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtimageformats-everywhere-src-%QT%.zip" 3e5c7247a3a012173d4d86d04940804336b58d74ad1779bb15395143a1baa898 || goto error
-call :downloadfile "qtsvg-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtsvg-everywhere-src-%QT%.zip" 395bd2edf129705504f59cd6d6f641fd2b3bda5a77718ab448a836b35e238053 || goto error
-call :downloadfile "qttools-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttools-everywhere-src-%QT%.zip" 48ff92781a5eaad10e341ee4fa1c91bca05a76a1782ebb2780dc38b2c8caedbb || goto error
-call :downloadfile "qttranslations-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttranslations-everywhere-src-%QT%.zip" fb1dbc65df6d1537ba3c6428ee3ff8149026d2ab5d201c2902d857766c1e4470 || goto error
+call :downloadfile "qtbase-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtbase-everywhere-src-%QT%.zip" 818f92518d1a89ee98ae818891a7d2f0e41aa45b933d55215da2df6d5459428e || goto error
+call :downloadfile "qtimageformats-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtimageformats-everywhere-src-%QT%.zip" 03f01042f86b4dbf7329a179f20835817c660a183178c11570cc0535b3c3ba58 || goto error
+call :downloadfile "qtsvg-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qtsvg-everywhere-src-%QT%.zip" d44d5ead8d4682f54c91687b5e32f2735f086419e3889e05609feae1a7f02da9 || goto error
+call :downloadfile "qttools-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttools-everywhere-src-%QT%.zip" a17eba4e1c00dbd62c13d708c2bc918c2954b2b25a94d3c05e891d62e8f187c8 || goto error
+call :downloadfile "qttranslations-everywhere-src-%QT%.zip" "https://download.qt.io/official_releases/qt/%QTMINOR%/%QT%/submodules/qttranslations-everywhere-src-%QT%.zip" e5ccf0eefd6b1ef9604fdf57f6d16ad8484d07fb141ca3a2d9c3f1771296ae25 || goto error
 
 if %DEBUG%==1 (
   echo Building debug and release libraries...
diff --git a/scripts/build-dependencies.sh b/scripts/build-dependencies.sh
index 646a1c143..b79ca50ad 100755
--- a/scripts/build-dependencies.sh
+++ b/scripts/build-dependencies.sh
@@ -5,7 +5,7 @@ set -e
 INSTALLDIR="$HOME/deps"
 NPROCS="$(getconf _NPROCESSORS_ONLN)"
 SDL=SDL2-2.28.5
-QT=6.5.3
+QT=6.6.1
 LIBBACKTRACE=ad106d5fdd5d960bd33fae1c48a351af567fd075
 
 mkdir -p deps-build
@@ -14,12 +14,12 @@ cd deps-build
 cat > SHASUMS <<EOF
 332cb37d0be20cb9541739c61f79bae5a477427d79ae85e352089afdaf6666e4  $SDL.tar.gz
 fd6f417fe9e3a071cf1424a5152d926a34c4a3c5070745470be6cf12a404ed79  $LIBBACKTRACE.zip
-df2f4a230be4ea04f9798f2c19ab1413a3b8ec6a80bef359f50284235307b546  qtbase-everywhere-src-$QT.tar.xz
-49c026c49a738ed024c072a4b205cdc1235507da4a2d0ea740bd574fff138ccb  qtimageformats-everywhere-src-$QT.tar.xz
-fc41c47b69ca1f80473cd4b11996394155781105345392961d064d04f95d5bef  qtsvg-everywhere-src-$QT.tar.xz
-fc91d32b3f696725bbb48b0df240c25b606bbee3bd22627cfcbee876a6405e37  qttools-everywhere-src-$QT.tar.xz
-83b44c0ddcf9c28e836f63c21a3fea2fb2c24cb630eefc79984f5bec44e949e3  qttranslations-everywhere-src-$QT.tar.xz
-f72a8588b7ff9b81bb311f2c8b541c11788b81003537b010360ca80eae52369f  qtwayland-everywhere-src-$QT.tar.xz
+450c5b4677b2fe40ed07954d7f0f40690068e80a94c9df86c2c905ccd59d02f7  qtbase-everywhere-src-$QT.tar.xz
+ac4ed08950072e375be662cfa64fdb447dd6e935cf29c56a4128d1500492188f  qtimageformats-everywhere-src-$QT.tar.xz
+248deb56d26a463cf3162f530358ccf90cfb654bbf518bb35ddf81b205e09228  qtsvg-everywhere-src-$QT.tar.xz
+4939105a7345ab4e19e7caee8654a836e65bd41910359623e0f233f3aff0914a  qttools-everywhere-src-$QT.tar.xz
+668702e822ad7150b27e7caa2158595fd9b3b77ffbc8262e6509872a3920ee88  qttranslations-everywhere-src-$QT.tar.xz
+66cc2d632dc07fc6cc4e35247f48b7c1753276ccbf86e86d7b24d799725568b1  qtwayland-everywhere-src-$QT.tar.xz
 EOF
 
 curl -L \
diff --git a/scripts/flatpak/install-packages.sh b/scripts/flatpak/install-packages.sh
index cf6428dd9..3a95e6484 100755
--- a/scripts/flatpak/install-packages.sh
+++ b/scripts/flatpak/install-packages.sh
@@ -19,8 +19,8 @@ function retry_command {
 }
 
 ARCH=x86_64
-KDE_BRANCH=6.5
-BRANCH=22.08
+KDE_BRANCH=6.6
+BRANCH=23.08
 FLAT_MANAGER_CLIENT_DIR="$HOME/.local/bin"
 
 # Build packages. Mostly needed for flat-manager-client.
@@ -42,7 +42,7 @@ declare -a BUILD_PACKAGES=(
 declare -a FLATPAK_PACKAGES=(
   "org.kde.Platform/${ARCH}/${KDE_BRANCH}"
   "org.kde.Sdk/${ARCH}/${KDE_BRANCH}"
-  "org.freedesktop.Sdk.Extension.llvm16/${ARCH}/${BRANCH}"
+  "org.freedesktop.Sdk.Extension.llvm17/${ARCH}/${BRANCH}"
   "org.freedesktop.appstream-glib/${ARCH}/stable"
 )
 
diff --git a/scripts/flatpak/org.duckstation.DuckStation.json b/scripts/flatpak/org.duckstation.DuckStation.json
index 07aedc82e..1981a0cc4 100644
--- a/scripts/flatpak/org.duckstation.DuckStation.json
+++ b/scripts/flatpak/org.duckstation.DuckStation.json
@@ -1,10 +1,10 @@
 {
   "app-id": "org.duckstation.DuckStation",
   "runtime": "org.kde.Platform",
-  "runtime-version": "6.5",
+  "runtime-version": "6.6",
   "sdk": "org.kde.Sdk",
   "sdk-extensions": [
-    "org.freedesktop.Sdk.Extension.llvm16"
+    "org.freedesktop.Sdk.Extension.llvm17"
   ],
   "command": "duckstation-qt",
   "finish-args": [
@@ -33,8 +33,8 @@
           "-DBUILD_NOGUI_FRONTEND=OFF",
           "-DBUILD_QT_FRONTEND=ON",
           "-DBUILD_TESTS=OFF",
-          "-DCMAKE_C_COMPILER=/usr/lib/sdk/llvm16/bin/clang",
-          "-DCMAKE_CXX_COMPILER=/usr/lib/sdk/llvm16/bin/clang++",
+          "-DCMAKE_C_COMPILER=/usr/lib/sdk/llvm17/bin/clang",
+          "-DCMAKE_CXX_COMPILER=/usr/lib/sdk/llvm17/bin/clang++",
           "-DCMAKE_EXE_LINKER_FLAGS_INIT=-fuse-ld=lld",
           "-DCMAKE_MODULE_LINKER_FLAGS_INIT=-fuse-ld=lld",
           "-DCMAKE_SHARED_LINKER_FLAGS_INIT=-fuse-ld=lld"