diff --git a/ports/doctest/CONTROL b/ports/doctest/CONTROL
index 135b8a4d8..68981d7af 100644
--- a/ports/doctest/CONTROL
+++ b/ports/doctest/CONTROL
@@ -1,4 +1,4 @@
 Source: doctest
-Version: 2.3.3
+Version: 2.3.4
 Homepage: https://github.com/onqtam/doctest
 Description: The fastest feature-rich C++ single-header testing framework for unit tests and TDD
diff --git a/ports/doctest/portfile.cmake b/ports/doctest/portfile.cmake
index 7c9c4bfed..c1fa00774 100644
--- a/ports/doctest/portfile.cmake
+++ b/ports/doctest/portfile.cmake
@@ -3,8 +3,8 @@ include(vcpkg_common_functions)
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO onqtam/doctest
-    REF 2.3.3
-    SHA512 9ef94de93906f3c43918f232b3baa64756fdaee883afc5b2e785e76b108f1aa0d526a49dac58ffb0475ebfd8d8394ef266aec499c29282eea9a2752fb60b663f
+    REF 2.3.4
+    SHA512 ca97da8e22684f2d901d0a9dc9c1d0c7126a850f75fe20c37a4d8bbc6f7eafc961313a6c58ca712f00465fff107e1b6b6d9557d2b04edb3029b0035bcfa6db20
     HEAD_REF master
 )