diff --git a/appveyor.yml b/appveyor.yml
index 5963f074..72760514 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,7 +4,7 @@ cache:
 
 install:
 - choco install ghc
-- curl https://download.libsodium.org/libsodium/releases/libsodium-1.0.11-mingw.tar.gz | tar zx
+- curl https://download.libsodium.org/libsodium/releases/libsodium-1.0.16-mingw.tar.gz | tar zx
 - refreshenv
 - set PATH=%PATH%;C:\ProgramData\chocolatey\lib\ghc\tools\ghc-8.0.2\bin