diff --git a/requirements.txt b/requirements.txt
index 59682fe..19cdbeb 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,3 +18,4 @@ more-itertools==8.12.0
 numpy==1.22.3
 Pillow==9.0.1
 prometheus-client==0.13.1
+frozendict==2.3.2