diff --git a/src/onedb/local/5.6.0_to_5.7.80.rb b/src/onedb/local/5.6.0_to_5.7.80.rb
index 1b28464c69..3f498252db 100644
--- a/src/onedb/local/5.6.0_to_5.7.80.rb
+++ b/src/onedb/local/5.6.0_to_5.7.80.rb
@@ -38,10 +38,15 @@ module Migrator
 
     def up
         feature_2944
+        GC.start
         bug_2687 # MUST be run before 2489, which generates short body
+        GC.start
         feature_2253
+        GC.start
         feature_2489_2671
+        GC.start
         feature_826
+        GC.start
         feature_2966
         true
     end