diff --git a/.github/workflows/linux-appimage-build.yml b/.github/workflows/linux-appimage-build.yml
index ac6fa2693..9fc059ff0 100644
--- a/.github/workflows/linux-appimage-build.yml
+++ b/.github/workflows/linux-appimage-build.yml
@@ -63,7 +63,7 @@ jobs:
       run: |
         mkdir build
         cd build
-        cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -DCMAKE_PREFIX_PATH="$HOME/deps" -DCMAKE_C_COMPILER=clang-17 -DCMAKE_CXX_COMPILER=clang++-17 -DCMAKE_EXE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_MODULE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_SHARED_LINKER_FLAGS_INIT="-fuse-ld=lld" ..
+        cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -DCMAKE_PREFIX_PATH="$HOME/deps" -DCMAKE_C_COMPILER=clang-18 -DCMAKE_CXX_COMPILER=clang++-18 -DCMAKE_EXE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_MODULE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_SHARED_LINKER_FLAGS_INIT="-fuse-ld=lld" ..
         cmake --build . --parallel
         cd ..
         scripts/appimage/make-appimage.sh $(realpath .) $(realpath ./build) $HOME/deps DuckStation-x64
@@ -134,7 +134,7 @@ jobs:
       run: |
         mkdir build
         cd build
-        cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DDISABLE_SSE4=ON -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -DCMAKE_PREFIX_PATH="$HOME/deps" -DCMAKE_C_COMPILER=clang-17 -DCMAKE_CXX_COMPILER=clang++-17 -DCMAKE_EXE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_MODULE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_SHARED_LINKER_FLAGS_INIT="-fuse-ld=lld" ..
+        cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DDISABLE_SSE4=ON -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -DCMAKE_PREFIX_PATH="$HOME/deps" -DCMAKE_C_COMPILER=clang-18 -DCMAKE_CXX_COMPILER=clang++-18 -DCMAKE_EXE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_MODULE_LINKER_FLAGS_INIT="-fuse-ld=lld" -DCMAKE_SHARED_LINKER_FLAGS_INIT="-fuse-ld=lld" ..
         cmake --build . --parallel
         cd ..
         scripts/appimage/make-appimage.sh $(realpath .) $(realpath ./build) $HOME/deps DuckStation-x64-SSE2
diff --git a/scripts/appimage/install-packages.sh b/scripts/appimage/install-packages.sh
index 7c0e4c480..4bc77989f 100755
--- a/scripts/appimage/install-packages.sh
+++ b/scripts/appimage/install-packages.sh
@@ -16,13 +16,13 @@ function retry_command {
 
 # Workaround for https://github.com/actions/runner-images/issues/675
 retry_command wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-retry_command sudo apt-add-repository -n 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main'
+retry_command sudo apt-add-repository -n 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main'
 
 retry_command sudo apt-get update
 retry_command sudo apt-get -y install \
-  build-essential clang-17 cmake curl extra-cmake-modules git libasound2-dev libcurl4-openssl-dev libdbus-1-dev libdecor-0-dev libegl-dev libevdev-dev \
+  build-essential clang-18 cmake curl extra-cmake-modules git libasound2-dev libcurl4-openssl-dev libdbus-1-dev libdecor-0-dev libegl-dev libevdev-dev \
   libfontconfig-dev libfreetype-dev libfuse2 libgtk-3-dev libgudev-1.0-dev libharfbuzz-dev libinput-dev libopengl-dev libpipewire-0.3-dev libpulse-dev \
   libssl-dev libudev-dev libva-dev libwayland-dev libx11-dev libx11-xcb-dev libxcb1-dev libxcb-composite0-dev libxcb-cursor-dev libxcb-damage0-dev \
   libxcb-glx0-dev libxcb-icccm4-dev libxcb-image0-dev libxcb-keysyms1-dev libxcb-present-dev libxcb-randr0-dev libxcb-render0-dev libxcb-render-util0-dev \
   libxcb-shape0-dev libxcb-shm0-dev libxcb-sync-dev libxcb-util-dev libxcb-xfixes0-dev libxcb-xinput-dev libxcb-xkb-dev libxext-dev libxkbcommon-x11-dev \
-  libxrandr-dev lld-17 llvm-17 nasm ninja-build patchelf pkg-config zlib1g-dev
+  libxrandr-dev lld-18 llvm-18 nasm ninja-build patchelf pkg-config zlib1g-dev