diff --git a/ci/deps_pinned.txt b/ci/deps_pinned.txt
index 500952555b..0b8cd9f7d7 100644
--- a/ci/deps_pinned.txt
+++ b/ci/deps_pinned.txt
@@ -3,3 +3,4 @@ pandas~=1.2.0
 matplotlib~=3.4.0
 scipy~=1.7.0
 statsmodels~=0.12.0
+pillow~=10.3.0