diff --git a/pkgs/servers/oauth2_proxy/default.nix b/pkgs/servers/oauth2-proxy/default.nix
similarity index 100%
rename from pkgs/servers/oauth2_proxy/default.nix
rename to pkgs/servers/oauth2-proxy/default.nix
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 78e7c308e7e..f85218d0eee 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -466,6 +466,7 @@ mapAliases ({
   nologin = shadow; # added 2018-04-25
   nxproxy = nx-libs; # added 2019-02-15
   nylas-mail-bin = throw "nylas-mail-bin was deprecated on 2019-09-11: abandoned by upstream";
+  oauth2_proxy = oauth2-proxy; # added 2021-04-18
   opencascade_oce = opencascade; # added 2018-04-25
   oblogout = throw "oblogout has been removed from nixpkgs, as it's archived upstream."; # added 2019-12-10
   opencl-icd = ocl-icd; # added 2017-01-20
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ad178f83a18..ed4690e73ab 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -18714,7 +18714,7 @@ in
 
   nsq = callPackage ../servers/nsq { };
 
-  oauth2_proxy = callPackage ../servers/oauth2_proxy {
+  oauth2-proxy = callPackage ../servers/oauth2-proxy {
     buildGoModule = buildGo115Module;
   };