diff --git a/scripts/runtests.py b/scripts/runtests.py
index ef807dae0..d7aebb9e5 100644
--- a/scripts/runtests.py
+++ b/scripts/runtests.py
@@ -26,9 +26,9 @@ _NPX_ERROR_MESSAGE = colored("\nSkipping Pyright tests: npx is not installed or
 _SUCCESS = colored("Success", "green")
 _SKIPPED = colored("Skipped", "yellow")
 _FAILED = colored("Failed", "red")
-# We're using the oldest supported version because it's the most likely to produce errors
+# We're using the oldest fully supported version because it's the most likely to produce errors
 # due to unsupported syntax, feature, or bug in a tool.
-_PYTHON_VERSION = "3.7"
+_PYTHON_VERSION = "3.8"
 
 
 def _parse_jsonc(json_text: str) -> str: