diff --git a/requirements.txt b/requirements.txt
index d55625b781..d2b86053a1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ numpy==1.25.0
 openstep-plist==0.3.0.post1
 opentype-sanitizer==9.1.0
 opentypespec==1.9.1
-orjson==3.9.1
+orjson==3.9.15
 outcome==1.2.0
 packaging==23.1
 picosvg==0.22.0