diff --git a/jedi/parser/token.py b/jedi/parser/token.py
index e9ab3a62..6890c8ef 100644
--- a/jedi/parser/token.py
+++ b/jedi/parser/token.py
@@ -68,6 +68,7 @@ opmap_raw = """\
 %= PERCENTEQUAL
 &= AMPEREQUAL
 |= VBAREQUAL
+@= ATEQUAL
 ^= CIRCUMFLEXEQUAL
 <<= LEFTSHIFTEQUAL
 >>= RIGHTSHIFTEQUAL