diff --git a/scss/__init__.py b/scss/__init__.py
index f1836657..98cbbc04 100644
--- a/scss/__init__.py
+++ b/scss/__init__.py
@@ -223,7 +223,7 @@
 # http://www.w3.org/TR/css3-animations/
 FUNCTIONS_ANIMATIONS = ''  # has 'from' and 'to' block selectors, but no new function
 FUNCTIONS_FILTER = 'grayscale blur sepia saturate opacity brightness contrast hue-rotate invert'
-FUNCTIONS_OTHERS = 'from to mask'
+FUNCTIONS_OTHERS = 'from to color-stop mask'
 VENDORS = '-[^-]+-.+'
 
 _css_functions_re = re.compile(r'^(%s)$' % (