diff --git a/appveyor.yml b/appveyor.yml
index ec9a6aca35..9899c30752 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -7,6 +7,7 @@ platform:
   - x64
 
 build_script:
+  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -S openssl"
   - SET PATH=C:\msys64\mingw64\bin;bin;%PATH%
   - gcc -v
   - git clone -q --depth 1 https://github.com/nim-lang/csources