diff --git a/tools/code_format/requirements.txt b/tools/code_format/requirements.txt
index dbd09788cb030..1b6d092dbc63d 100644
--- a/tools/code_format/requirements.txt
+++ b/tools/code_format/requirements.txt
@@ -1,27 +1,36 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --generate-hashes tools/code_format/requirements.txt
+#
+flake8-polyfill==1.0.2 \
+    --hash=sha256:12be6a34ee3ab795b19ca73505e7b55826d5f6ad7230d31b18e106400169b9e9 \
+    --hash=sha256:e44b087597f6da52ec6393a709e7108b2905317d0c0b744cdca6208e670d8eda
+    # via pep8-naming
 flake8==3.9.2 \
-    --hash=sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907 \
-    --hash=sha256:07528381786f2a6237b061f6e96610a4167b226cb926e2aa2b6b1d78057c576b
-importlib-metadata==4.4.0 \
-    --hash=sha256:960d52ba7c21377c990412aca380bf3642d734c2eaab78a2c39319f67c6a5786 \
-    --hash=sha256:e592faad8de1bda9fe920cf41e15261e7131bcf266c30306eec00e8e225c1dd5
+    --hash=sha256:07528381786f2a6237b061f6e96610a4167b226cb926e2aa2b6b1d78057c576b \
+    --hash=sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907
+    # via
+    #   -r tools/code_format/requirements.txt
+    #   flake8-polyfill
 mccabe==0.6.1 \
     --hash=sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42 \
     --hash=sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f
+    # via flake8
+pep8-naming==0.11.1 \
+    --hash=sha256:a1dd47dd243adfe8a83616e27cf03164960b507530f155db94e10b36a6cd6724 \
+    --hash=sha256:f43bfe3eea7e0d73e8b5d07d6407ab47f2476ccaeff6937c84275cd30b016738
+    # via -r tools/code_format/requirements.txt
 pycodestyle==2.7.0 \
     --hash=sha256:514f76d918fcc0b55c6680472f0a37970994e07bbb80725808c17089be302068 \
     --hash=sha256:c389c1d06bf7904078ca03399a4816f974a1d590090fecea0c63ec26ebaf1cef
+    # via flake8
 pyflakes==2.3.1 \
     --hash=sha256:7893783d01b8a89811dd72d7dfd4d84ff098e5eed95cfa8905b22bbffe52efc3 \
     --hash=sha256:f5bc8ecabc05bb9d291eb5203d6810b49040f6ff446a756326104746cc00c1db
+    # via flake8
 yapf==0.31.0 \
-    --hash=sha256:e3a234ba8455fe201eaa649cdac872d590089a18b661e39bbac7020978dd9c2e \
-    --hash=sha256:408fb9a2b254c302f49db83c59f9aa0b4b0fd0ec25be3a5c51181327922ff63d
-zipp==3.4.1 \
-    --hash=sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098 \
-    --hash=sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76
-pep8-naming==0.11.1 \
-    --hash=sha256:f43bfe3eea7e0d73e8b5d07d6407ab47f2476ccaeff6937c84275cd30b016738 \
-    --hash=sha256:a1dd47dd243adfe8a83616e27cf03164960b507530f155db94e10b36a6cd6724
-flake8-polyfill==1.0.2 \
-    --hash=sha256:12be6a34ee3ab795b19ca73505e7b55826d5f6ad7230d31b18e106400169b9e9 \
-    --hash=sha256:e44b087597f6da52ec6393a709e7108b2905317d0c0b744cdca6208e670d8eda
+    --hash=sha256:408fb9a2b254c302f49db83c59f9aa0b4b0fd0ec25be3a5c51181327922ff63d \
+    --hash=sha256:e3a234ba8455fe201eaa649cdac872d590089a18b661e39bbac7020978dd9c2e
+    # via -r tools/code_format/requirements.txt