diff --git a/pipeline/templatetags/pipeline.py b/pipeline/templatetags/pipeline.py
index 20c9bb42..5050f067 100644
--- a/pipeline/templatetags/pipeline.py
+++ b/pipeline/templatetags/pipeline.py
@@ -132,7 +132,7 @@ def render(self, context):
             package = self.package_for(package_name, "css")
         except PackageNotFound:
             w = "Package %r is unknown. Check PIPELINE['STYLESHEETS'] in your settings."
-            logger.warn(w, package_name)
+            logger.warning(w, package_name)
             # fail silently, do not return anything if an invalid group is specified
             return ""
         return self.render_compressed(package, package_name, "css")
@@ -168,7 +168,7 @@ def render(self, context):
             package = self.package_for(package_name, "js")
         except PackageNotFound:
             w = "Package %r is unknown. Check PIPELINE['JAVASCRIPT'] in your settings."
-            logger.warn(w, package_name)
+            logger.warning(w, package_name)
             # fail silently, do not return anything if an invalid group is specified
             return ""
         return self.render_compressed(package, package_name, "js")