diff --git a/CI/ios/before_install.sh b/CI/ios/before_install.sh
index a8326e1fd..a90bf89b4 100755
--- a/CI/ios/before_install.sh
+++ b/CI/ios/before_install.sh
@@ -3,3 +3,5 @@
 echo DEVELOPER_DIR=/Applications/Xcode_14.2.app >> $GITHUB_ENV
 
 . CI/install_conan_dependencies.sh "dependencies-ios"
+
+brew install ninja