diff --git a/python3/requirements.txt b/python3/requirements.txt
index 72fd4bae..05fcd688 100644
--- a/python3/requirements.txt
+++ b/python3/requirements.txt
@@ -104,9 +104,9 @@ dm-tree==0.1.8 \
     --hash=sha256:f7ac31b9aecccb2c6e1ab29706f6ded3eba0c2c69c770322c9c685929c3d6afb \
     --hash=sha256:fa42a605d099ee7d41ba2b5fb75e21423951fd26e5d50583a00471238fb3021d
     # via dm-env
-filelock==3.9.0 \
-    --hash=sha256:7b319f24340b51f55a2bf7a12ac0755a9b03e718311dac567a0f4f7fabd2f5de \
-    --hash=sha256:f58d535af89bb9ad5cd4df046f741f8553a418c01a7856bf0d173bbc9f6bd16d
+filelock==3.20.3 \
+    --hash=sha256:18c57ee915c7ec61cff0ecf7f0f869936c7c30191bb0cf406f1341778d0834e1 \
+    --hash=sha256:4b0dda527ee31078689fc205ec4f1c1bf7d56cf88b6dc9426c4f230e46c2dce1
     # via virtualenv
 fire==0.4.0 \
     --hash=sha256:c5e2b8763699d1142393a46d0e3e790c5eb2f0706082df8f647878842c216a62