diff --git a/.github/workflows/workflow.yml b/.github/workflows/ci.yml
similarity index 92%
rename from .github/workflows/workflow.yml
rename to .github/workflows/ci.yml
index 2a8bb21..9af020e 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/ci.yml
@@ -25,9 +25,13 @@ jobs:
           - 5.3.6
           - 5.4.8
           - 5.5.0
+          - LuaJIT-2.0.5
         os:
           - macos-latest
           - ubuntu-latest
+        exclude:
+          - os: macos-latest
+            version: LuaJIT-2.0.5
 
     runs-on: ${{ matrix.os }}
 
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..7d48349
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+precommit: fmt lint test test_luajit
+
+test:
+	asdf plugin test plugin . --asdf-tool-version 5.5.0
+
+test_luajit:
+	asdf plugin test plugin . --asdf-tool-version LuaJIT-2.0.5
+
+fmt:
+	shfmt --language-dialect bash --indent 2 --write bin/*
+
+lint:
+	shellcheck --shell bash --external-sources bin/*
+
+.PHONY: precommit test test_luajit lint
diff --git a/bin/install b/bin/install
index abf0f45..8906890 100755
--- a/bin/install
+++ b/bin/install
@@ -44,10 +44,16 @@ install_lua() {
     cd "$(untar_path "$install_type" "$version" "$download_dir")" || exit 1
 
     # Target is OS-specific
-    target="$(get_target)"
+    target="$(get_target "$version")"
 
-    # Build Lua
-    if version_5x_or_greater "$version"; then
+    # Build Lua or LuaJIT
+    local lua_type
+    lua_type="$(get_lua_type "$version")"
+
+    if [ "${lua_type}" = "LuaJIT" ]; then
+      make || exit 1
+      make install PREFIX="$install_path" || exit 1
+    elif version_5x_or_greater "$version"; then
       make "$target" || exit 1
       make test || exit 1
       make local || exit 1
@@ -56,18 +62,21 @@ install_lua() {
       make install INSTALL_ROOT=install || exit 1
     fi
 
-    # `make local` target changed in version 5x
-    if version_5_2x_or_greater "$version"; then
-      cp -r install/* "$install_path" || exit 1
-    elif version_5x_or_greater "$version"; then
-      cp -r ./* "$install_path" || exit 1
-    else
-      # We install version 4 and lesser in install/
-      cp -r install/* "$install_path" || exit 1
+    # Copy files for regular Lua only (LuaJIT installs directly)
+    if [ "${lua_type}" != "LuaJIT" ]; then
+      # `make local` target changed in version 5x
+      if version_5_2x_or_greater "$version"; then
+        cp -r install/* "$install_path" || exit 1
+      elif version_5x_or_greater "$version"; then
+        cp -r ./* "$install_path" || exit 1
+      else
+        # We install version 4 and lesser in install/
+        cp -r install/* "$install_path" || exit 1
+      fi
     fi
 
-    # If we are installing Lua 5.x or greater install LuaRocks as well
-    if version_5x_or_greater "$version"; then
+    # If we are installing Lua 5.x or greater install LuaRocks as well (not for LuaJIT)
+    if [ "${lua_type}" != "LuaJIT" ] && version_5x_or_greater "$version"; then
       local luarocks_version
       luarocks_version="${ASDF_LUA_LUAROCKS_VERSION:-$(get_latest_luarocks_version)}"
       local luarocks_name="luarocks-$luarocks_version"
@@ -103,20 +112,28 @@ untar_path() {
       local dir_name="lua"
     fi
   elif [ "${lua_type}" = "LuaJIT" ]; then
-    local dir_name="luajit-${lua_version}"
+    local dir_name="LuaJIT-${lua_version}"
   fi
 
   echo "$tmp_download_dir/$dir_name"
 }
 
 get_target() {
+  local version="$1"
+  local os
+  local lua_type
+
   os="$(uname -s)"
+  lua_type="$(get_lua_type "$version")"
 
   # If on OSX (Darwin) then the target is macosx
   if [ "$os" = "Darwin" ]; then
     echo "macosx"
   elif [ "${ASDF_LUA_LINUX_READLINE-}" == "1" ]; then
     echo "linux-readline"
+  elif [ "${lua_type}" = "LuaJIT" ]; then
+    # LuaJIT doesn't use targets like regular Lua
+    echo ""
   else # Otherwise let the lua Makefile guess for us
     if less_than_version_5_4x "$version"; then
       echo "linux"
diff --git a/bin/list-all b/bin/list-all
index 4a420f8..db81005 100755
--- a/bin/list-all
+++ b/bin/list-all
@@ -47,6 +47,15 @@ versions_list=(
   5.4.7
   5.4.8
   5.5.0
+  # LuaJIT versions
+  LuaJIT-2.0.1
+  LuaJIT-2.0.2
+  LuaJIT-2.0.3
+  LuaJIT-2.0.4
+  LuaJIT-2.0.5
+  LuaJIT-2.1.0-beta1
+  LuaJIT-2.1.0-beta2
+  LuaJIT-2.1.0-beta3
 )
 
 versions=""
diff --git a/lib/utils.sh b/lib/utils.sh
index e6cdb53..e650050 100644
--- a/lib/utils.sh
+++ b/lib/utils.sh
@@ -24,7 +24,9 @@ get_download_url() {
   if [ "${lua_type}" = "Lua" ]; then
     echo "https://www.lua.org/ftp/lua-${version}.tar.gz"
   elif [ "${lua_type}" = "LuaJIT" ]; then
-    echo "https://luajit.org/download/LuaJIT-${version}.tar.gz"
+    local lua_version
+    lua_version="$(get_lua_version "$version")"
+    echo "https://github.com/LuaJIT/LuaJIT/archive/refs/tags/v${lua_version}.tar.gz"
   fi
 }
 
@@ -38,18 +40,14 @@ get_lua_type() {
 }
 
 get_lua_version() {
-  IFS='-' read -ra version_info <<<"$1"
+  local version="$1"
 
-  if [ "${version_info[0]}" = "LuaJIT" ]; then
-    # TODO LuaJIT
-    echo "${version_info[1]}-${version_info[2]}"
+  if [[ "$version" == LuaJIT-* ]]; then
+    # For LuaJIT, remove the "LuaJIT-" prefix
+    echo "${version#LuaJIT-}"
   else
-    # Lua
-    if [ "${#version_info[@]}" -eq 1 ]; then
-      echo "${version_info[0]}"
-    else
-      echo "${version_info[0]}-${version_info[1]}"
-    fi
+    # For regular Lua, return as-is
+    echo "$version"
   fi
 }
 
@@ -65,6 +63,8 @@ get_download_file_path() {
 
   if [ "${lua_type}" = "Lua" ]; then
     local pkg_name="lua-${lua_version}.tar.gz"
+  else
+    local pkg_name="v${lua_version}.tar.gz"
   fi
 
   echo "$tmp_download_dir/$pkg_name"