diff --git a/CHANGES.rst b/CHANGES.rst
index f226f0ce554..d8f453a98d1 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -21,6 +21,9 @@ documentation
 - Added docs for the NIRSpec MSA metadata file to the data products area of RTD.
   [#8399]
 
+- Added __main__ to the Jump class to avoid memory leak when running
+  multiprocessing. []
+
 extract_1d
 ----------
 
diff --git a/jwst/jump/jump_step.py b/jwst/jump/jump_step.py
index 7e95f46383e..3a59cea2c88 100755
--- a/jwst/jump/jump_step.py
+++ b/jwst/jump/jump_step.py
@@ -142,3 +142,7 @@ def process(self, input):
         result.meta.cal_step.jump = 'COMPLETE'
 
         return result
+
+
+if __name__ == '__main__':
+    JumpStep().process()