1 files changed, 3 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index e647389514..46bc74b7a7 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -630,6 +630,7 @@ module ActiveRecord
         ER_LOCK_DEADLOCK        = 1213
         ER_CANNOT_ADD_FOREIGN   = 1215
         ER_CANNOT_CREATE_TABLE  = 1005
+        ER_LOCK_WAIT_TIMEOUT    = 1205
 
         def translate_exception(exception, message)
           case error_number(exception)
@@ -653,6 +654,8 @@ module ActiveRecord
             NotNullViolation.new(message)
           when ER_LOCK_DEADLOCK
             Deadlocked.new(message)
+          when ER_LOCK_WAIT_TIMEOUT
+            TransactionTimeout.new(message)
           else
             super
           end