diff --git a/procgen-build/requirements.txt b/procgen-build/requirements.txt
index e86b0fad..ac9bd9cb 100644
--- a/procgen-build/requirements.txt
+++ b/procgen-build/requirements.txt
@@ -1,2 +1,2 @@
 imageio==2.9.0  # the pillow version we want to use requires an older imageio version
-pillow==8.4.0  # this is required by gym3, newer versions fail to install on linux cibuildwheel with a missing dependency error
+pillow==9.3.0  # this is required by gym3, newer versions fail to install on linux cibuildwheel with a missing dependency error