diff --git a/Ghidra/Features/PyGhidra/support/pyghidra_launcher.py b/Ghidra/Features/PyGhidra/support/pyghidra_launcher.py
index c618ef5606..88aa2da78a 100644
--- a/Ghidra/Features/PyGhidra/support/pyghidra_launcher.py
+++ b/Ghidra/Features/PyGhidra/support/pyghidra_launcher.py
@@ -84,7 +84,14 @@ def in_venv() -> bool:
     return sys.prefix != sys.base_prefix
 
 def is_externally_managed() -> bool:
-    marker: Path = Path(sysconfig.get_path('stdlib', sysconfig.get_default_scheme())) / 'EXTERNALLY-MANAGED'
+    get_default_scheme = 'get_default_scheme'
+    if hasattr(sysconfig, get_default_scheme):
+		# Python 3.10 and later
+        default_scheme = getattr(sysconfig, get_default_scheme)
+    else:
+		# Python 3.9
+        default_scheme = getattr(sysconfig, f'_{get_default_scheme}')
+    marker: Path = Path(sysconfig.get_path("stdlib", default_scheme())) / 'EXTERNALLY-MANAGED'
     return marker.is_file()
 
 def get_venv_exe(venv_dir: Path) -> List[str]: