diff --git a/appveyor.yml b/appveyor.yml
index 58c9a3c..da4f460 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -20,15 +20,15 @@ environment:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: msvc-14.1
       ADDRMD: 32,64
-      CXXSTD: 14,17
+      CXXSTD: 14,17,latest
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: clang-win
       ADDRMD: 64
-      CXXSTD: 14,17
+      CXXSTD: 14,17,latest
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
       TOOLSET: msvc-14.2
       ADDRMD: 32,64
-      CXXSTD: 14,17
+      CXXSTD: 14,17,latest
 
 install:
   - set BOOST_BRANCH=develop