diff --git a/dialogflow-prebuilt-agents/cloud-functions/retail_assistant/requirements.txt b/dialogflow-prebuilt-agents/cloud-functions/retail_assistant/requirements.txt
index 7282d01d..fa689847 100644
--- a/dialogflow-prebuilt-agents/cloud-functions/retail_assistant/requirements.txt
+++ b/dialogflow-prebuilt-agents/cloud-functions/retail_assistant/requirements.txt
@@ -433,9 +433,9 @@ httplib2==0.22.0 \
     # via
     #   google-api-python-client
     #   google-auth-httplib2
-idna==3.10 \
-    --hash=sha256:12f65c9b470abda6dc35cf8e63cc574b1c52b11df2c86030af0ac09b01b13ea9 \
-    --hash=sha256:946d195a0d259cbba61165e88e65941f16e9b36ea6ddb97f00452bae8b1287d3
+idna==3.15 \
+    --hash=sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8 \
+    --hash=sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc
     # via requests
 itsdangerous==2.2.0 \
     --hash=sha256:c6242fc49e35958c8b15141343aa660db5fc54d4f13a1db01a3f5891b98700ef \