diff --git a/core/modules/migrate/src/MigrateExecutable.php b/core/modules/migrate/src/MigrateExecutable.php
index 94075b730e2..224746f3812 100644
--- a/core/modules/migrate/src/MigrateExecutable.php
+++ b/core/modules/migrate/src/MigrateExecutable.php
@@ -534,6 +534,9 @@ class MigrateExecutable implements MigrateExecutableInterface {
 
     // @TODO: explore resetting the container.
 
+    // Run garbage collector to further reduce memory.
+    gc_collect_cycles();
+
     return memory_get_usage();
   }