diff --git a/ci/azure/windows_install b/ci/azure/windows_install
index 952e9f78cb..760520e0b9 100755
--- a/ci/azure/windows_install
+++ b/ci/azure/windows_install
@@ -3,7 +3,7 @@
 set -x
 set -e
 
-pacman -S --needed --noconfirm wget p7zip python3-pip
+pacman -S --needed --noconfirm wget p7zip python3-pip openssl
 pip install s3cmd
 wget -nv "https://ziglang.org/deps/llvm%2bclang-7.0.0-win64-msvc-release.tar.xz"
 tar xf llvm+clang-7.0.0-win64-msvc-release.tar.xz