diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c6cc7e871..8746c75c4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,14 +16,14 @@ jobs:
     strategy:
       matrix:
         os: ['ubuntu-16.04', 'macos-10.15']
-        llvm: ['3.8', '5.0', '6.0', '7', '8', '9', '10', '11']
+        llvm: ['3.8', '5.0', '6.0', '7', '8', '9', '10', '11', '12']
         cmake: ['0', '1']
         cuda: ['0', '1']
         static: ['0', '1']
         slib: ['0', '1']
         lua: ['luajit', 'moonjit']
         exclude:
-          # macOS: exclude LLVM 5.0, 8-11 make, cuda/no-static/no-slib
+          # macOS: exclude LLVM 5.0, 8-12 make, cuda/no-static/no-slib
           - os: 'macos-10.15'
             llvm: '5.0'
           - os: 'macos-10.15'
@@ -38,6 +38,9 @@ jobs:
           - os: 'macos-10.15'
             llvm: '11'
             cmake: '0'
+          - os: 'macos-10.15'
+            llvm: '12'
+            cmake: '0'
           - os: 'macos-10.15'
             cuda: '1'
           - os: 'macos-10.15'
@@ -85,6 +88,8 @@ jobs:
             cuda: '1'
           - llvm: '11'
             cuda: '1'
+          - llvm: '12'
+            cuda: '1'
 
           # no-static: only LLVM 8
           - llvm: '3.8'
@@ -101,6 +106,8 @@ jobs:
             static: '0'
           - llvm: '11'
             static: '0'
+          - llvm: '12'
+            static: '0'
 
           # no-slib: only LLVM 9
           - llvm: '3.8'
@@ -117,6 +124,8 @@ jobs:
             slib: '0'
           - llvm: '11'
             slib: '0'
+          - llvm: '12'
+            slib: '0'
 
           # Moonjit: only LLVM 9
           - llvm: '3.8'
@@ -133,6 +142,8 @@ jobs:
             lua: 'moonjit'
           - llvm: '11'
             lua: 'moonjit'
+          - llvm: '12'
+            lua: 'moonjit'
     steps:
       - uses: actions/checkout@v1
       - run: ./travis.sh
diff --git a/travis.sh b/travis.sh
index d682953a5..551c9eaff 100755
--- a/travis.sh
+++ b/travis.sh
@@ -29,7 +29,16 @@ fi
 
 if [[ $(uname) = Linux ]]; then
   sudo apt-get update -qq
-  if [[ $LLVM_CONFIG = llvm-config-11 ]]; then
+  if [[ $LLVM_CONFIG = llvm-config-12 ]]; then
+    wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+    sudo add-apt-repository -y "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-12 main"
+    for i in {1..5}; do sudo apt-get update -qq && break || sleep 15; done
+    sudo apt-get install -y llvm-12-dev clang-12 libclang-12-dev libedit-dev
+    export CMAKE_PREFIX_PATH=/usr/lib/llvm-12:/usr/share/llvm-12
+    if [[ -n $STATIC_LLVM && $STATIC_LLVM -eq 0 ]]; then
+        export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/lib/llvm-12/lib"
+    fi
+  elif [[ $LLVM_CONFIG = llvm-config-11 ]]; then
     wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
     sudo add-apt-repository -y "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-11 main"
     for i in {1..5}; do sudo apt-get update -qq && break || sleep 15; done
@@ -104,7 +113,13 @@ if [[ $(uname) = Linux ]]; then
 fi
 
 if [[ $(uname) = Darwin ]]; then
-  if [[ $LLVM_CONFIG = llvm-config-11 ]]; then
+  if [[ $LLVM_CONFIG = llvm-config-12 ]]; then
+    curl -L -O https://github.com/elliottslaughter/llvm-build/releases/download/llvm-12.0.1/clang+llvm-12.0.1-x86_64-apple-darwin.tar.xz
+    tar xf clang+llvm-12.0.1-x86_64-apple-darwin.tar.xz
+    ln -s clang+llvm-12.0.1-x86_64-apple-darwin/bin/llvm-config llvm-config-12
+    ln -s clang+llvm-12.0.1-x86_64-apple-darwin/bin/clang clang-12
+    export CMAKE_PREFIX_PATH=$PWD/clang+llvm-12.0.1-x86_64-apple-darwin
+  elif [[ $LLVM_CONFIG = llvm-config-11 ]]; then
     curl -L -O https://github.com/elliottslaughter/llvm-build/releases/download/llvm-11.0.1/clang+llvm-11.0.1-x86_64-apple-darwin.tar.xz
     tar xf clang+llvm-11.0.1-x86_64-apple-darwin.tar.xz
     ln -s clang+llvm-11.0.1-x86_64-apple-darwin/bin/llvm-config llvm-config-11