diff --git a/adaptor_utils/string_code/requirements.txt b/adaptor_utils/string_code/requirements.txt
index d72e61d..3c3778f 100644
--- a/adaptor_utils/string_code/requirements.txt
+++ b/adaptor_utils/string_code/requirements.txt
@@ -1,6 +1,6 @@
 certifi==2021.10.8
 charset-normalizer==2.0.12
-idna==3.3
+idna==3.7
 numpy==1.22.3
 pandas==1.1.3
 python-dateutil==2.8.2