diff --git a/client/package.json b/client/package.json
index 5945e5976da..3c6fbfc5319 100644
--- a/client/package.json
+++ b/client/package.json
@@ -64,7 +64,6 @@
     "pyre-to-regexp": "^0.0.5",
     "querystring-es3": "^0.2.1",
     "regenerator-runtime": "^0.13.9",
-    "regression": "^2.0.1",
     "requirejs": "2.3.6",
     "rxjs": "^7.5.2",
     "rxjs-spy": "^8.0.2",
diff --git a/client/yarn.lock b/client/yarn.lock
index d39bba5b15c..6e09d197866 100644
--- a/client/yarn.lock
+++ b/client/yarn.lock
@@ -8198,11 +8198,6 @@ regjsparser@^0.7.0:
   dependencies:
     jsesc "~0.5.0"
 
-regression@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/regression/-/regression-2.0.1.tgz#8d29c3e8224a10850c35e337e85a8b2fac3b0c87"
-  integrity sha1-jSnD6CJKEIUMNeM36FqLL6w7DIc=
-
 remove-bom-buffer@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/remove-bom-buffer/-/remove-bom-buffer-3.0.0.tgz#c2bf1e377520d324f623892e33c10cac2c252b53"