diff --git a/CI/before_install.osx.sh b/CI/before_install.osx.sh
index c4793d1cf..2ab996b10 100755
--- a/CI/before_install.osx.sh
+++ b/CI/before_install.osx.sh
@@ -7,4 +7,4 @@ brew outdated pkgconfig || brew upgrade pkgconfig
 brew install qt
 
 curl -fSL -R -J https://downloads.openmw.org/osx/dependencies/openmw-deps-100d2e0.zip -o ~/openmw-deps.zip
-unzip ~/openmw-deps.zip -d /private/tmp/openmw-deps > /dev/null
+unzip -o ~/openmw-deps.zip -d /private/tmp/openmw-deps > /dev/null