diff --git a/ports/argparse/CONTROL b/ports/argparse/CONTROL
index c7c33adac9a..58aee48ef43 100644
--- a/ports/argparse/CONTROL
+++ b/ports/argparse/CONTROL
@@ -1,4 +1,4 @@
 Source: argparse
-Version: 2019-06-10
+Version: 1.9
 Description: Argument parser for modern C++
 Homepage: https://github.com/p-ranav/argparse
diff --git a/ports/argparse/portfile.cmake b/ports/argparse/portfile.cmake
index 0ad21e10afb..a3d38d4b4ab 100644
--- a/ports/argparse/portfile.cmake
+++ b/ports/argparse/portfile.cmake
@@ -5,8 +5,8 @@ include(vcpkg_common_functions)
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO p-ranav/argparse
-    REF 2c71311b5fa49b7d65e6628375f2748d58830856
-    SHA512 08a28a3fb424befe7df9a428fbad8e2687a1b331d7099bfaca2c3e04d8d4b4888e99d481226407bf90bfce282388545b09e4125128215cc95dc56fb313641bf6
+    REF v1.9
+    SHA512 6cfc7fc274a11093fe5254f244adaacdcc81123b1d7e9b51110ffdfe9a344fb59044ec9d98017f25aa8ea417d57cfca330fdea7161226da26f1b4fc199fdc4fb
     HEAD_REF master
 )