diff --git a/package.json b/package.json
index 16761009a..c3b939670 100644
--- a/package.json
+++ b/package.json
@@ -169,7 +169,7 @@
     "node-forge": "^1.3.1",
     "ol": "10.5.0",
     "pbf": "3.2.1",
-    "proj4": "2.17.0",
+    "proj4": "2.19.4",
     "promise-polyfill": "8.2.3",
     "rbush": "^2.0.2",
     "three": "0.150.1",