diff --git a/ci/azure/linux_script b/ci/azure/linux_script
index 20373f3a49..65724e7827 100755
--- a/ci/azure/linux_script
+++ b/ci/azure/linux_script
@@ -5,14 +5,14 @@ set -e
 
 BUILDDIR="$(pwd)"
 
-sudo sh -c 'echo "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main" >> /etc/apt/sources.list'
+sudo sh -c 'echo "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main" >> /etc/apt/sources.list'
 wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
 sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
 sudo apt-get update -q
 
 sudo apt-get remove -y llvm-*
 sudo rm -rf /usr/local/*
-sudo apt-get install -y libxml2-dev libclang-8-dev llvm-8 llvm-8-dev cmake s3cmd gcc-7 g++-7
+sudo apt-get install -y libxml2-dev libclang-9-dev llvm-9 llvm-9-dev cmake s3cmd gcc-7 g++-7
 
 export CC=gcc-7
 export CXX=g++-7
@@ -25,7 +25,7 @@ make -j2 install
 if [ "${BUILD_REASON}" != "PullRequest" ]; then
   ARTIFACTSDIR="$BUILDDIR/artifacts"
   mkdir "$ARTIFACTSDIR"
-  docker run -i --mount type=bind,source="$ARTIFACTSDIR",target=/z ziglang/static-base:llvm8-1 -j2 $BUILD_SOURCEVERSION
+  docker run -i --mount type=bind,source="$ARTIFACTSDIR",target=/z ziglang/static-base:llvm9-1 -j2 $BUILD_SOURCEVERSION
   TARBALL="$(ls $ARTIFACTSDIR)"
   mv "$DOWNLOADSECUREFILE_SECUREFILEPATH" "$HOME/.s3cfg"
   s3cmd put -P --add-header="cache-control: public, max-age=31536000, immutable" "$ARTIFACTSDIR/$TARBALL" s3://ziglang.org/builds/
diff --git a/ci/azure/macos_script b/ci/azure/macos_script
index 7a7f1d1bce..a588a20dc2 100755
--- a/ci/azure/macos_script
+++ b/ci/azure/macos_script
@@ -6,7 +6,7 @@ set -e
 brew install s3cmd gcc@8
 
 ZIGDIR="$(pwd)"
-CACHE_BASENAME="llvm+clang-8.0.0-macos-x86_64-gcc8-release"
+CACHE_BASENAME="llvm+clang-9.0.0-macos-x86_64-gcc8-release"
 PREFIX="$HOME/$CACHE_BASENAME"
 TMPDIR="$HOME/tmpz"
 JOBS="-j2"
@@ -42,18 +42,18 @@ else
   rm $PREFIX/lib/libz*dylib
 
   cd $TMPDIR
-  wget https://releases.llvm.org/8.0.0/llvm-8.0.0.src.tar.xz
-  tar xf llvm-8.0.0.src.tar.xz
-  cd llvm-8.0.0.src/
+  wget https://releases.llvm.org/9.0.0/llvm-9.0.0.src.tar.xz
+  tar xf llvm-9.0.0.src.tar.xz
+  cd llvm-9.0.0.src/
   mkdir build
   cd build
   cmake .. -DCMAKE_INSTALL_PREFIX=$PREFIX -DCMAKE_PREFIX_PATH=$PREFIX -DCMAKE_BUILD_TYPE=Release -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR;RISCV" -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_ENABLE_TERMINFO=OFF
   make $JOBS install
 
   cd $TMPDIR
-  wget https://releases.llvm.org/8.0.0/cfe-8.0.0.src.tar.xz
-  tar xf cfe-8.0.0.src.tar.xz
-  cd cfe-8.0.0.src/
+  wget https://releases.llvm.org/9.0.0/cfe-9.0.0.src.tar.xz
+  tar xf cfe-9.0.0.src.tar.xz
+  cd cfe-9.0.0.src/
   mkdir build
   cd build
   cmake .. -DCMAKE_INSTALL_PREFIX=$PREFIX -DCMAKE_PREFIX_PATH=$PREFIX -DCMAKE_BUILD_TYPE=Release
diff --git a/ci/azure/windows_script.bat b/ci/azure/windows_script.bat
index ae17cf1768..9d1dbfb7c4 100644
--- a/ci/azure/windows_script.bat
+++ b/ci/azure/windows_script.bat
@@ -11,7 +11,7 @@ SET "MSYSTEM=%PREVMSYSTEM%"
 
 SET "ZIGBUILDDIR=%SRCROOT%\build"
 SET "ZIGINSTALLDIR=%ZIGBUILDDIR%\release"
-SET "ZIGPREFIXPATH=%SRCROOT%\llvm+clang-8.0.0-win64-msvc-release"
+SET "ZIGPREFIXPATH=%SRCROOT%\llvm+clang-9.0.0-win64-msvc-release"
 
 call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
 
diff --git a/ci/srht/freebsd_script b/ci/srht/freebsd_script
index aa5f5f18c6..7937efeb38 100755
--- a/ci/srht/freebsd_script
+++ b/ci/srht/freebsd_script
@@ -4,7 +4,7 @@ set -x
 set -e
 
 ZIGDIR="$(pwd)"
-CACHE_BASENAME="llvm+clang-8.0.0-freebsd-x86_64-release"
+CACHE_BASENAME="llvm+clang-9.0.0-freebsd-x86_64-release"
 PREFIX="$HOME/$CACHE_BASENAME"
 JOBS="-j$(sysctl -n hw.ncpu)"