diff --git a/requirements.txt b/requirements.txt
index 94b80df..43e8806 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -65,7 +65,7 @@ numpy==1.26.2
 openstep-plist==0.3.1
 opentype-sanitizer==9.1.0
 opentypespec==1.9.1
-orjson==3.9.10
+orjson==3.9.15
 outcome==1.3.0.post0
 packaging==23.2
 picosvg==0.22.1