diff --git a/.appveyor.yml b/.appveyor.yml
index a1c6aed..2247248 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -18,9 +18,9 @@ environment:
 
 install:
   - cd c:\projects
-  - curl -sSL -o boost.7z https://dl.bintray.com/boostorg/release/1.66.0/source/boost_1_67_0.7z
+  - curl -sSL -o boost.7z https://dl.bintray.com/boostorg/release/1.67.0/source/boost_1_67_0.7z
   - 7z x boost.7z
-  - set BOOST_ROOT=c:\projects\boost_1_66_0
+  - set BOOST_ROOT=c:\projects\boost_1_67_0
   - rd /s /q %BOOST_ROOT%\boost\functional\hash
   - cd %BOOST_ROOT%\tools\build
   - cmd /c bootstrap