diff --git a/src/find-pypy.ts b/src/find-pypy.ts
index 1008ed6ea..42c54bcd2 100644
--- a/src/find-pypy.ts
+++ b/src/find-pypy.ts
@@ -55,6 +55,12 @@ export async function findPyPyVersion(
   );
   const pythonLocation = pypyInstall.getPyPyBinaryPath(installDir);
   core.exportVariable('pythonLocation', pythonLocation);
+  // https://cmake.org/cmake/help/latest/module/FindPython.html#module:FindPython
+  core.exportVariable('Python_ROOT_DIR', pythonLocation);
+  // https://cmake.org/cmake/help/latest/module/FindPython2.html#module:FindPython2
+  core.exportVariable('Python2_ROOT_DIR', pythonLocation);
+  // https://cmake.org/cmake/help/latest/module/FindPython3.html#module:FindPython3
+  core.exportVariable('Python3_ROOT_DIR', pythonLocation);
   core.exportVariable('PKG_CONFIG_PATH', pythonLocation + '/lib/pkgconfig');
   core.addPath(pythonLocation);
   core.addPath(_binDir);
diff --git a/src/find-python.ts b/src/find-python.ts
index 0a3dde138..3fe741595 100644
--- a/src/find-python.ts
+++ b/src/find-python.ts
@@ -70,6 +70,12 @@ export async function useCpythonVersion(
   }
 
   core.exportVariable('pythonLocation', installDir);
+  // https://cmake.org/cmake/help/latest/module/FindPython.html#module:FindPython
+  core.exportVariable('Python_ROOT_DIR', installDir);
+  // https://cmake.org/cmake/help/latest/module/FindPython2.html#module:FindPython2
+  core.exportVariable('Python2_ROOT_DIR', installDir);
+  // https://cmake.org/cmake/help/latest/module/FindPython3.html#module:FindPython3
+  core.exportVariable('Python3_ROOT_DIR', installDir);
   core.exportVariable('PKG_CONFIG_PATH', installDir + '/lib/pkgconfig');
 
   if (IS_LINUX) {