diff --git a/requirements.txt b/requirements.txt
index af2dc58..27b21e0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -90,7 +90,7 @@ odfpy==1.4.1
     # via flattentool
 openpyxl==3.0.7
     # via flattentool
-orjson==3.9.15
+orjson==3.11.6
     # via libcoveocds
 packaging==24.1
     # via gunicorn
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 52db864..6d8461e 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -152,7 +152,7 @@ openpyxl==3.0.7
     # via
     #   -r requirements.txt
     #   flattentool
-orjson==3.9.15
+orjson==3.11.6
     # via
     #   -r requirements.txt
     #   libcoveocds