diff --git a/.appveyor.yml b/.appveyor.yml
index 7f4fd2bc..8c229c2b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -30,7 +30,7 @@ environment:
       PYTHON: C:\\Python36-x64
       PYTHON_VERSION: 3.6.x
       PYTHON_ARCH: 64
-      MSVC: 16.8.1
+      MSVC: 16.8.3
       ARCH: x86_64
       BOOST_PREFIX: C:\Libraries\boost_1_73_0