diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 8d95f15deb6..d4f1eeb1201 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -30,8 +30,9 @@ jobs:
       - name: Prepare
         run: |
           sudo apt update
-          sudo apt install -y ruby ruby-dev rubygems build-essential llvm
+          sudo apt install -y ruby ruby-dev rubygems build-essential llvm libc++-dev
           sudo apt install -y libgl1-mesa-dev libglu1-mesa-dev
+          clang --version
 
       - name: Tests
         run: |
diff --git a/.github/workflows/linux_luajit.yml b/.github/workflows/linux_luajit.yml
index 946e6f2a5ee..acec3fbce00 100644
--- a/.github/workflows/linux_luajit.yml
+++ b/.github/workflows/linux_luajit.yml
@@ -33,7 +33,7 @@ jobs:
       - name: Prepare
         run: |
           sudo apt update
-          sudo apt install -y build-essential llvm
+          sudo apt install -y build-essential llvm libc++-dev
           sudo apt install -y libgl1-mesa-dev libglu1-mesa-dev
 
       - name: Tests
diff --git a/tests/projects/c++/modules/test_headerunits.lua b/tests/projects/c++/modules/test_headerunits.lua
index 70e8b3d51bd..b13b22a7f6a 100644
--- a/tests/projects/c++/modules/test_headerunits.lua
+++ b/tests/projects/c++/modules/test_headerunits.lua
@@ -51,7 +51,7 @@ function main(t)
         end
         local clang = find_tool("clang", {version = true})
         if clang and clang.version then
-            if semver.compare(clang.version, "15.0") >= 0 then
+            if semver.compare(clang.version, "19.0") >= 0 then
                 os.exec("xmake clean -a")
                 -- clang-scan-deps dependency detection doesn't support header units atm
                 os.exec("xmake f --toolchain=clang --policies=build.c++.clang.fallbackscanner -c --yes")