diff --git a/pygments/lexers/pascal.py b/pygments/lexers/pascal.py
index 7e0223d6db..6756e23411 100644
--- a/pygments/lexers/pascal.py
+++ b/pygments/lexers/pascal.py
@@ -563,9 +563,9 @@ class AdaLexer(RegexLexer):
                 'exception', 'exit', 'interface', 'for', 'goto', 'if', 'is', 'limited',
                 'loop', 'new', 'null', 'of', 'or', 'others', 'out', 'overriding',
                 'pragma', 'protected', 'raise', 'range', 'record', 'renames', 'requeue',
-                'return', 'reverse', 'select', 'separate', 'subtype', 'synchronized',
-                'task', 'tagged', 'terminate', 'then', 'type', 'until', 'when',
-                'while', 'xor'), prefix=r'\b', suffix=r'\b'),
+                'return', 'reverse', 'select', 'separate', 'some', 'subtype',
+                'synchronized', 'task', 'tagged', 'terminate', 'then', 'type', 'until',
+                'when', 'while', 'xor'), prefix=r'\b', suffix=r'\b'),
              Keyword.Reserved),
             (r'"[^"]*"', String),
             include('attribute'),