diff --git a/requirements.txt b/requirements.txt
index c3fa2b8..0928952 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ numpy==1.25.1
 openstep-plist==0.3.0.post1
 opentype-sanitizer==9.1.0
 opentypespec==1.9.1
-orjson==3.9.2
+orjson==3.9.15
 outcome==1.2.0
 packaging==23.1
 picosvg==0.22.0