diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3c59535..065fb34 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,28 +15,33 @@ jobs:
       fail-fast: false
 
     name: "Build for Android ${{matrix.arch}}"
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: set up JDK 1.17
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v4
       with:
-        java-version: 1.17
+        java-version: 17
+        distribution: temurin
+    - name: Install build dependencies
+      run: |
+        sudo apt update
+        sudo apt -y install autoconf python3 python-is-python3 unzip zip systemtap-sdt-dev libxtst-dev libasound2-dev libelf-dev libfontconfig1-dev libx11-dev libxext-dev libxrandr-dev libxrender-dev libxtst-dev libxt-dev
     - name: Build with CI build script
       run: bash "ci_build_arch_${{matrix.arch}}.sh"
     - name: Upload JDK build output
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: "jdk17-${{matrix.arch}}"
         path: jdk17*.tar.xz
     - name: Upload JRE build output
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: 'jre17-${{matrix.arch}}'
         path: jre17*.tar.xz
     - name: Upload JRE debuginfo build output
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: "jre17-debuginfo-${{matrix.arch}}"
         path: dizout
@@ -47,7 +52,7 @@ jobs:
     continue-on-error: true
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Build with CI build script
       run: |
@@ -57,53 +62,53 @@ jobs:
         bash "ci_build_arch_aarch64.sh"
 
     - name: Upload JDK build output
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: "jdk17-ios-aarch64"
         path: jdk17*.tar.xz
 
     - name: Upload JRE build output
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: 'jre17-ios-aarch64'
         path: jre17*.tar.xz
 
     - name: Upload JRE debuginfo build output
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: "jre17-ios-debuginfo-aarch64"
         path: dizout
 
   pojav:
     needs: build_android
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Get jre17-aarch32
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: jre17-aarch32
         path: pojav
     - name: Get jre17-aarch64
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: jre17-aarch64
         path: pojav
     - name: Get jre17-x86
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: jre17-x86
         path: pojav
     - name: Get jre17-x86_64
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v4
       with:
         name: jre17-x86_64
         path: pojav
     - name: Repack JRE
       run: bash "repackjre.sh" $GITHUB_WORKSPACE/pojav $GITHUB_WORKSPACE/pojav/jre17-pojav
     - name: Upload artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
           name: jre17-pojav
           path: pojav/jre17-pojav/*
diff --git a/buildjdk.sh b/buildjdk.sh
index c45752b..9b0318b 100755
--- a/buildjdk.sh
+++ b/buildjdk.sh
@@ -5,18 +5,18 @@ set -e
 export FREETYPE_DIR=$PWD/freetype-$BUILD_FREETYPE_VERSION/build_android-$TARGET_SHORT
 export CUPS_DIR=$PWD/cups-2.2.4
 export CFLAGS+=" -DLE_STANDALONE" # -I$FREETYPE_DIR -I$CUPS_DI
-if [ "$TARGET_JDK" == "arm" ] # || [ "$BUILD_IOS" == "1" ]
+if [[ "$TARGET_JDK" == "arm" ]] # || [[ "$BUILD_IOS" == "1" ]]
 then
   export CFLAGS+=" -O3 -D__thumb__"
 else
-  if [ "$TARGET_JDK" == "x86" ]; then
+  if [[ "$TARGET_JDK" == "x86" ]]; then
      export CFLAGS+=" -O3 -mstackrealign"
   else
      export CFLAGS+=" -O3"
   fi
 fi
 
-# if [ "$TARGET_JDK" == "aarch32" ] || [ "$TARGET_JDK" == "aarch64" ]
+# if [[ "$TARGET_JDK" == "aarch32" ]] || [[ "$TARGET_JDK" == "aarch64" ]]
 # then
 #   export CFLAGS+=" -march=armv7-a+neon"
 # fi
@@ -27,7 +27,7 @@ fi
 # cp -R /usr/include/X11 $ANDROID_INCLUDE/
 # cp -R /usr/include/fontconfig $ANDROID_INCLUDE/
 
-if [ "$BUILD_IOS" != "1" ]; then
+if [[ "$BUILD_IOS" != "1" ]]; then
   chmod +x android-wrapped-clang
   chmod +x android-wrapped-clang++
   ln -s -f /usr/include/X11 $ANDROID_INCLUDE/
@@ -41,8 +41,6 @@ if [ "$BUILD_IOS" != "1" ]; then
   export CFLAGS+=" -DANDROID"
   export LDFLAGS+=" -L$PWD/dummy_libs"
 
-  sudo apt -y install systemtap-sdt-dev libxtst-dev libasound2-dev libelf-dev libfontconfig1-dev libx11-dev libxext-dev libxrandr-dev libxrender-dev libxtst-dev libxt-dev
-
 # Create dummy libraries so we won't have to remove them in OpenJDK makefiles
   mkdir -p dummy_libs
   ar cru dummy_libs/libpthread.a
@@ -52,7 +50,7 @@ else
   ln -s -f /opt/X11/include/X11 $ANDROID_INCLUDE/
   ln -sfn $themacsysroot/System/Library/Frameworks/CoreAudio.framework/Headers $ANDROID_INCLUDE/CoreAudio
   ln -sfn $themacsysroot/System/Library/Frameworks/IOKit.framework/Headers $ANDROID_INCLUDE/IOKit
-  if [ "$(uname -p)" == "arm" ]; then
+  if [[ "$(uname -p)" == "arm" ]]; then
     ln -s -f /opt/homebrew/include/fontconfig $ANDROID_INCLUDE/
   else
     ln -s -f /usr/local/include/fontconfig $ANDROID_INCLUDE/
@@ -77,7 +75,7 @@ cd openjdk
 
 # Apply patches
 git reset --hard
-if [ "$BUILD_IOS" != "1" ]; then
+if [[ "$BUILD_IOS" != "1" ]]; then
   git apply --reject --whitespace=fix ../patches/jdk17u_android.diff || echo "git apply failed (Android patch set)"
 else
   git apply --reject --whitespace=fix ../patches/jdk17u_ios.diff || echo "git apply failed (iOS patch set)"
@@ -114,7 +112,7 @@ bash ./configure \
     --x-libraries=/usr/lib \
         $platform_args || \
 error_code=$?
-if [ "$error_code" -ne 0 ]; then
+if [[ "$error_code" -ne 0 ]]; then
   echo "\n\nCONFIGURE ERROR $error_code , config.log:"
   cat config.log
   exit $error_code
@@ -122,14 +120,14 @@ fi
 
 jobs=4
 
-if [ "$BUILD_IOS" == "1" ]; then
+if [[ "$BUILD_IOS" == "1" ]]; then
   jobs=$(sysctl -n hw.ncpu)
 fi
 
 cd build/${JVM_PLATFORM}-${TARGET_JDK}-${JVM_VARIANTS}-${JDK_DEBUG_LEVEL}
 make JOBS=$jobs images || \
 error_code=$?
-if [ "$error_code" -ne 0 ]; then
+if [[ "$error_code" -ne 0 ]]; then
   echo "Build failure, exited with code $error_code. Trying again."
   make JOBS=$jobs images
 fi
diff --git a/buildlibs.sh b/buildlibs.sh
index 134d66c..6a8960e 100755
--- a/buildlibs.sh
+++ b/buildlibs.sh
@@ -5,7 +5,7 @@ cd freetype-$BUILD_FREETYPE_VERSION
 
 echo "Building Freetype"
 
-if [ "$BUILD_IOS" != "1" ]; then
+if [[ "$BUILD_IOS" != "1" ]]; then
   export PATH=$TOOLCHAIN/bin:$PATH
   ./configure \
     --host=$TARGET \
@@ -15,7 +15,7 @@ if [ "$BUILD_IOS" != "1" ]; then
     --with-harfbuzz=no $EXTRA_ARGS \
     || error_code=$?
 
-if [ "$error_code" -ne 0 ]; then
+if [[ "$error_code" -ne 0 ]]; then
   echo "\n\nCONFIGURE ERROR $error_code , config.log:"
   cat ${PWD}/builds/unix/config.log
   exit $error_code
diff --git a/ci_build_arch_aarch64.sh b/ci_build_arch_aarch64.sh
index 4588b66..5428d5c 100755
--- a/ci_build_arch_aarch64.sh
+++ b/ci_build_arch_aarch64.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 set -e
-if [ "$BUILD_IOS" == "1" ]; then
+if [[ "$BUILD_IOS" == "1" ]]; then
   export TARGET=aarch64-apple-ios
 else
   export TARGET=aarch64-linux-android
diff --git a/ci_build_global.sh b/ci_build_global.sh
index 2e262a2..0f7b14c 100755
--- a/ci_build_global.sh
+++ b/ci_build_global.sh
@@ -4,10 +4,7 @@ set -e
 
 export JDK_DEBUG_LEVEL=release
 
-if [ "$BUILD_IOS" != "1" ]; then
-  sudo apt update
-  sudo apt -y install autoconf python unzip zip
-
+if [[ "$BUILD_IOS" != "1" ]]; then
   wget -nc -nv -O android-ndk-$NDK_VERSION-linux-x86_64.zip "https://dl.google.com/android/repository/android-ndk-$NDK_VERSION-linux-x86_64.zip"
   ./extractndk.sh
   ./maketoolchain.sh
diff --git a/removejdkdebuginfo.sh b/removejdkdebuginfo.sh
index 7411a3c..2ebe4ec 100755
--- a/removejdkdebuginfo.sh
+++ b/removejdkdebuginfo.sh
@@ -8,7 +8,7 @@ imagespath=openjdk/build/${JVM_PLATFORM}-${TARGET_JDK}-${JVM_VARIANTS}-${JDK_DEB
 rm -rf dizout jreout jdkout dSYM-temp
 mkdir -p dizout dSYM-temp/{lib,bin}
 
-if [ "$BUILD_IOS" != "1" ]; then
+if [[ "$BUILD_IOS" != "1" ]]; then
    cp freetype-$BUILD_FREETYPE_VERSION/build_android-$TARGET_SHORT/lib/libfreetype.so $imagespath/jdk/lib/
 fi
 
@@ -22,7 +22,7 @@ cp -r $imagespath/jdk jdkout
 
 export EXTRA_JLINK_OPTION=
 
-if [ "$TARGET_JDK" == "aarch64" ] || [ "$TARGET_JDK" == "x86_64" ]; then
+if [[ "$TARGET_JDK" == "aarch64" ]] || [[ "$TARGET_JDK" == "x86_64" ]]; then
    echo "Building for aarch64 or x86_64, introducing JVMCI module"
    export EXTRA_JLINK_OPTION=,jdk.internal.vm.ci
 fi
@@ -38,7 +38,7 @@ jlink \
 --release-info=jdkout/release \
 --compress=0
 
-if [ "$BUILD_IOS" != "1" ]; then
+if [[ "$BUILD_IOS" != "1" ]]; then
    cp freetype-$BUILD_FREETYPE_VERSION/build_android-$TARGET_SHORT/lib/libfreetype.so jreout/lib/
 fi
 
@@ -53,7 +53,7 @@ find jdkout -name "*.dSYM"  | xargs -- rm -rf
 
 #TODO: fix .dSYM stuff
 
-if [ "$BUILD_IOS" == "1" ]; then
+if [[ "$BUILD_IOS" == "1" ]]; then
   install_name_tool -id @rpath/libfreetype.dylib jdkout/lib/libfreetype.dylib
   install_name_tool -id @rpath/libfreetype.dylib jreout/lib/libfreetype.dylib
   install_name_tool -change build_android-arm64/lib/libfreetype.dylib @rpath/libfreetype.dylib jdkout/lib/libfontmanager.dylib
diff --git a/repackjre.sh b/repackjre.sh
index 4109298..44aa5bc 100755
--- a/repackjre.sh
+++ b/repackjre.sh
@@ -68,7 +68,7 @@ makearch i386 x86
 makearch amd64 x86_64
 
 # if running under GitHub Actions, write commit sha, else formatted system date
-if [ -n "$GITHUB_SHA" ]
+if [[ -n "$GITHUB_SHA" ]]
 then
 echo $GITHUB_SHA>"$out"/version
 else
diff --git a/setdevkitpath.sh b/setdevkitpath.sh
index 67b594d..594118f 100755
--- a/setdevkitpath.sh
+++ b/setdevkitpath.sh
@@ -2,29 +2,29 @@
 # https://github.com/PojavLauncherTeam/openjdk-multiarch-jdk8u/blob/aarch64-shenandoah-jdk8u272-b10/jdk/src/share/native/sun/java2d/loops/GraphicsPrimitiveMgr.c
 export NDK_VERSION=r21
 
-if [ -z "$BUILD_FREETYPE_VERSION" ]
+if [[ -z "$BUILD_FREETYPE_VERSION" ]]
 then
   export BUILD_FREETYPE_VERSION="2.10.0"
 fi
 
-if [ -z "$JDK_DEBUG_LEVEL" ]
+if [[ -z "$JDK_DEBUG_LEVEL" ]]
 then
   export JDK_DEBUG_LEVEL=release
 fi
 
-if [ "$TARGET_JDK" == "aarch64" ]
+if [[ "$TARGET_JDK" == "aarch64" ]]
 then
   export TARGET_SHORT=arm64
 else
   export TARGET_SHORT=$TARGET_JDK
 fi
 
-if [ -z "$JVM_VARIANTS" ]
+if [[ -z "$JVM_VARIANTS" ]]
 then
   export JVM_VARIANTS=server
 fi
 
-if [ "$BUILD_IOS" == "1" ]; then
+if [[ "$BUILD_IOS" == "1" ]]; then
   export JVM_PLATFORM=macosx
 
   export thecc=$(xcrun -find -sdk iphoneos clang)
diff --git a/tarjdk.sh b/tarjdk.sh
index fe91a23..740c45a 100755
--- a/tarjdk.sh
+++ b/tarjdk.sh
@@ -2,7 +2,7 @@
 set -e
 . setdevkitpath.sh
 
-if [ "$BUILD_IOS" != "1" ]; then
+if [[ "$BUILD_IOS" != "1" ]]; then
 
 unset AR AS CC CXX LD OBJCOPY RANLIB STRIP CPPFLAGS LDFLAGS
 git clone https://github.com/termux/termux-elf-cleaner || true