diff --git a/serverless_requirements.txt b/serverless_requirements.txt
index 2d778a8e..1f055ad1 100644
--- a/serverless_requirements.txt
+++ b/serverless_requirements.txt
@@ -27,6 +27,7 @@ watchfiles==0.19.0
 websockets==11.0.3
 pytz==2023.3
 tzdata==2023.3
+urllib3<2
 epc-api-python==1.0.2
 tqdm
 fuzzywuzzy