diff --git a/CMakeLists.txt b/CMakeLists.txt
index 499afebc..e7bbc67b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -250,9 +250,11 @@ endif()
 # Find SWIG
 find_package(SWIG 4.0 COMPONENTS python)
 if(SWIG_FOUND)
-  find_package(PythonLibs REQUIRED)
-  if(PYTHONLIBS_FOUND)
+  find_package(Python3 COMPONENTS Interpreter Development)
+  if(PYTHON3_FOUND)
     set(HAVE_SWIG 1)
+  else()
+    message(STATUS "Found SWIG but no Python3 header/library; cannot use SWIG")
   endif()
 endif()