diff --git a/ports/argumentum/CONTROL b/ports/argumentum/CONTROL
index 055a423374..a41e9c2502 100755
--- a/ports/argumentum/CONTROL
+++ b/ports/argumentum/CONTROL
@@ -1,4 +1,4 @@
 Source: argumentum
-Version: 0.2.2
+Version: 0.3.1
 Description: A C++17 command line argument parser inspired by Python argparse
 Homepage: https://github.com/mmahnic/argumentum
diff --git a/ports/argumentum/portfile.cmake b/ports/argumentum/portfile.cmake
index 7d8ffae7a3..52d7d1c742 100755
--- a/ports/argumentum/portfile.cmake
+++ b/ports/argumentum/portfile.cmake
@@ -3,8 +3,8 @@ vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO mmahnic/argumentum
-    REF v0.2.2
-    SHA512 750a26d021cdf243479a20d01924007cdca717a53f34e4969d2df6c2c10c2f41a4df4bcd0a9fdf3d75928290d31195fa490fe13d4f2cba391c9dbad48aa98184
+    REF v0.3.1
+    SHA512 96f3a2077dacabf95d06120e24a50147b153090ddb0b6da17c960f8fe6724567bcd3337409f4729e1d8d15058550ed9f34a861da16fb6c999207554154e411c1
     HEAD_REF master
 )