diff --git a/requirements.txt b/requirements.txt
index 33bb7dba2611..8935eac21982 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,6 +16,7 @@ torch>=1.8.0  # see https://pytorch.org/get-started/locally (recommended)
 torchvision>=0.9.0
 tqdm>=4.64.0
 ultralytics>=8.0.147
+dill>=0.3.7
 # protobuf<=3.20.1  # https://github.com/ultralytics/yolov5/issues/8012
 
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