diff --git a/setup.py b/setup.py
index da3bd38..895a835 100644
--- a/setup.py
+++ b/setup.py
@@ -62,11 +62,6 @@ requires = [
     #
     # package                           # low                   high
 
-    # TODO: v1.1 suddenly caused an issue; perhaps can remove this
-    # restriction once a later version comes out?
-    # cf. https://docs.pylonsproject.org/projects/plaster/en/latest/changes.html
-    'plaster<1.1',                      # 1.0
-
     'mysql-connector-python',
     'psycopg2',                         # 2.8.5
     'Tailbone',                         # 0.8.97