1 files changed, 8 insertions, 0 deletions

diff --git a/lib/sqlalchemy/sql.py b/lib/sqlalchemy/sql.py
index e7f8a8ae1..700ae64fc 100644
--- a/lib/sqlalchemy/sql.py
+++ b/lib/sqlalchemy/sql.py
@@ -837,6 +837,14 @@ class UpdateBase(ClauseElement):
         if parameters is None:
             return None
 
+        if isinstance(parameters, list) or isinstance(parameters, tuple):
+            pp = {}
+            i = 0
+            for c in self.table.c:
+                pp[c.key] = parameters[i]
+                i +=1
+            parameters = pp
+            
         for key in parameters.keys():
             value = parameters[key]
             if isinstance(value, Select):