diff --git a/python/acquire/acquire.pyi b/python/acquire/acquire.pyi
index f3876eb..5494527 100644
--- a/python/acquire/acquire.pyi
+++ b/python/acquire/acquire.pyi
@@ -1404,4 +1404,6 @@ class VoltageRange:
         """Returns a dictionary of the `VoltageRange` object's attributes."""
         ...
 
-def core_api_version() -> str: ...
+def core_api_version() -> str:
+    """Returns the version string for the core API."""
+    ...