diff --git a/npbackup/requirements.txt b/npbackup/requirements.txt
index 789bb0b..98332ae 100644
--- a/npbackup/requirements.txt
+++ b/npbackup/requirements.txt
@@ -22,4 +22,5 @@ pyyaml  # Required for python-i18n / i18nice which does not work with ruamel.yam
 # we'll use an inline version for now
 i18nice>=0.6.2
 packaging
-pywin32; platform_system == "Windows"
\ No newline at end of file
+pywin32; platform_system == "Windows"
+imageio; platform_system == "Darwin"