diff --git a/.snyk b/.snyk
index 6632a4c..97d1bb7 100644
--- a/.snyk
+++ b/.snyk
@@ -43,3 +43,8 @@ patch:
         patched: '2019-07-06T03:18:51.170Z'
     - tilejson > requestretry > request > form-data > async > lodash:
         patched: '2019-07-06T03:18:51.170Z'
+  SNYK-JS-HTTPSPROXYAGENT-469131:
+    - snyk > proxy-agent > https-proxy-agent:
+        patched: '2019-10-05T03:18:40.753Z'
+    - snyk > proxy-agent > pac-proxy-agent > https-proxy-agent:
+        patched: '2019-10-05T03:18:40.753Z'
diff --git a/package.json b/package.json
index 33c86c0..933f0dc 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "tilelive-tmstyle": "^0.5.1",
     "tilelive-utfgrid": "^0.2.0",
     "tilelive-vector": "^3.8.0",
-    "snyk": "^1.192.3"
+    "snyk": "^1.231.0"
   },
   "snyk": true
 }