diff --git a/util/names.py b/util/names.py
index d6b4c1886..9fb6f3064 100644
--- a/util/names.py
+++ b/util/names.py
@@ -5,7 +5,7 @@ import anunidecode # Don't listen to pylint's lies. This import is required for
 
 from uuid import uuid4
 
-REPOSITORY_NAME_REGEX = re.compile(r'^[a-zA-Z0-9_-]+$')
+REPOSITORY_NAME_REGEX = re.compile(r'^[\.a-zA-Z0-9_-]+$')
 
 VALID_TAG_PATTERN = r'[\w][\w.-]{0,127}'
 FULL_TAG_PATTERN = r'^[\w][\w.-]{0,127}$'