diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c836226..1b23f4b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -5,10 +5,10 @@ on:
   pull_request:
 
 env:
-  QT_VERSION: 6.10.0 # Keep in sync with CMakeLists.txt
-  KF_VERSION: v6.19.0 # Ditto
+  QT_VERSION: 6.10.1 # Keep in sync with CMakeLists.txt
+  KF_VERSION: v6.21.0 # Ditto
   KIRIGAMI_ADDONS_VERSION: v1.10.0 # Ditto x2
-  PLASMA_VERSION: v6.5.1 # For Breeze
+  PLASMA_VERSION: v6.5.4 # For Breeze
   COMMON_CMAKE_OPTIONS: "-DBUILD_TESTING=OFF -DBUILD_PYTHON_BINDINGS=OFF"
 
 jobs:
@@ -77,6 +77,10 @@ jobs:
             gettext \
             libsecret-1-dev
 
+      - name: Setup Python dependencies
+        run: |
+          pip install lxml
+
       - name: Cache Prefix
         id: cache-prefix-restore
         uses: actions/cache/restore@v4
@@ -172,7 +176,6 @@ jobs:
 
       - name: Build KGuiAddons
         if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
-        continue-on-error: true
         run: |
           git clone --depth 1 --branch ${{ env.KF_VERSION }}  https://invent.kde.org/frameworks/kguiaddons.git
           cmake -B ${{ steps.strings.outputs.build-output-dir }}-kguiaddons -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S kguiaddons -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} -DWITH_WAYLAND=OFF -DWITH_X11=OFF ${{ env.COMMON_CMAKE_OPTIONS }}
@@ -180,24 +183,33 @@ jobs:
 
       - name: Build KGlobalAccel
         if: (runner.os == 'Linux') && (steps.cache-prefix-restore.outputs.cache-hit != 'true')
-        continue-on-error: true
         run: |
           git clone --depth 1 --branch ${{ env.KF_VERSION }}  https://invent.kde.org/frameworks/kglobalaccel.git
           cmake -B ${{ steps.strings.outputs.build-output-dir }}-kglobalaccel -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S kglobalaccel -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} ${{ env.COMMON_CMAKE_OPTIONS }}
           cmake --build ${{ steps.strings.outputs.build-output-dir }}-kglobalaccel --config ${{ matrix.build_type }} --target install
 
-      - name: Build Breeze Icons
+      - name: Clone Breeze Icons
         if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
-        continue-on-error: true
         run: |
           git clone --depth 1 --branch ${{ env.KF_VERSION }}  https://invent.kde.org/frameworks/breeze-icons.git
-          cmake -B ${{ steps.strings.outputs.build-output-dir }}-breeze-icons -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S breeze-icons -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} -DICONS_LIBRARY=ON -DSKIP_INSTALL_ICONS=ON ${{ env.COMMON_CMAKE_OPTIONS }}
-          cmake --build ${{ steps.strings.outputs.build-output-dir }}-breeze-icons --config ${{ matrix.build_type }} --target install
+
+      # Don't exit on XML errors (which happen for some reason)
+      - name: Fix Breeze Icons
+        uses: richardrigutins/replace-in-files@v2
+        if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
+        with:
+          files: 'breeze-icons/tools/qrcAlias.cpp'
+          search-text: 'qFatal'
+          replacement-text: 'qWarning'
+
+      - name: Build Breeze Icons
+        if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
+        run: |
+          cmake -B ${{ steps.strings.outputs.build-output-dir }}-breeze-icons -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S breeze-icons -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} -DSKIP_INSTALL_ICONS=ON ${{ env.COMMON_CMAKE_OPTIONS }}
           cmake --build ${{ steps.strings.outputs.build-output-dir }}-breeze-icons --config ${{ matrix.build_type }} --target install
 
       - name: Build KWidgetsAddons
         if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
-        continue-on-error: true
         run: |
           git clone --depth 1 --branch ${{ env.KF_VERSION }}  https://invent.kde.org/frameworks/kwidgetsaddons.git
           cmake -B ${{ steps.strings.outputs.build-output-dir }}-kwidgetsaddons -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S kwidgetsaddons -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} ${{ env.COMMON_CMAKE_OPTIONS }}
@@ -205,7 +217,6 @@ jobs:
 
       - name: Build KColorScheme
         if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
-        continue-on-error: true
         run: |
           git clone --depth 1 --branch ${{ env.KF_VERSION }}  https://invent.kde.org/frameworks/kcolorscheme.git
           cmake -B ${{ steps.strings.outputs.build-output-dir }}-kcolorscheme -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S kcolorscheme -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} ${{ env.COMMON_CMAKE_OPTIONS }}
@@ -213,7 +224,6 @@ jobs:
 
       - name: Build KIconThemes
         if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
-        continue-on-error: true
         run: |
           git clone --depth 1 --branch ${{ env.KF_VERSION }}  https://invent.kde.org/frameworks/kiconthemes.git
           cmake -B ${{ steps.strings.outputs.build-output-dir }}-kiconthemes -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S kiconthemes -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} ${{ env.COMMON_CMAKE_OPTIONS }}
@@ -221,7 +231,6 @@ jobs:
 
       - name: Build KCrash
         if: steps.cache-prefix-restore.outputs.cache-hit != 'true'
-        continue-on-error: true
         run: |
           git clone --depth 1 --branch ${{ env.KF_VERSION }}  https://invent.kde.org/frameworks/kcrash.git
           cmake -B ${{ steps.strings.outputs.build-output-dir }}-kcrash -DCMAKE_PREFIX_PATH=${{ steps.strings.outputs.prefix-dir }} -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -S kcrash -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.prefix-dir }} ${{ env.COMMON_CMAKE_OPTIONS }}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 52d6a28..7621bfe 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,7 +48,7 @@ if (LINUX)
     find_package(Qt6 ${QT_MIN_VERSION} REQUIRED NO_MODULE COMPONENTS DBus)
 endif ()
 
-find_package(KF6 ${KF_MIN_VERSION} REQUIRED COMPONENTS Kirigami I18n Config CoreAddons Archive)
+find_package(KF6 ${KF_MIN_VERSION} REQUIRED COMPONENTS Kirigami I18n Config CoreAddons Archive IconThemes)
 find_package(KF6KirigamiAddons 1.10.0 REQUIRED)
 find_package(QCoro6 REQUIRED COMPONENTS Core Network Qml)
 qcoro_enable_coroutines()
diff --git a/launcher/CMakeLists.txt b/launcher/CMakeLists.txt
index 2415284..bfff040 100644
--- a/launcher/CMakeLists.txt
+++ b/launcher/CMakeLists.txt
@@ -165,6 +165,7 @@ target_link_libraries(astra PRIVATE
         Qt6::Widgets
         Qt6::QuickControls2
         KF6::Kirigami
+        KF6::IconThemes
         KirigamiApp)
 
 if (BUILD_WEBVIEW)
diff --git a/launcher/src/main.cpp b/launcher/src/main.cpp
index 8586fcd..e5c0890 100755
--- a/launcher/src/main.cpp
+++ b/launcher/src/main.cpp
@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include <KAboutData>
+#include <KIconTheme>
 #include <KLocalizedString>
 #include <KirigamiApp>
 #include <QApplication> // NOTE: do not remove this, if your IDE suggests to do so
@@ -30,6 +31,8 @@ int main(int argc, char *argv[])
     QtWebView::initialize();
 #endif
 
+    KIconTheme::initTheme(); // TODO: KirigamiApp doesn't call this before app construction so it doesn't work on Windows
+
     KirigamiApp::App app(argc, argv);
     KirigamiApp kapp;