diff --git a/pkgs/applications/networking/instant-messengers/discord/default.nix b/pkgs/applications/networking/instant-messengers/discord/default.nix
index 96f144915bbb..a2e521df8d64 100644
--- a/pkgs/applications/networking/instant-messengers/discord/default.nix
+++ b/pkgs/applications/networking/instant-messengers/discord/default.nix
@@ -17,7 +17,7 @@ let
     else
       {
         stable = "0.0.345";
-        ptb = "0.0.171";
+        ptb = "0.0.173";
         canary = "0.0.774";
         development = "0.0.87";
       };
@@ -48,7 +48,7 @@ let
       };
       ptb = fetchurl {
         url = "https://ptb.dl2.discordapp.net/apps/osx/${version}/DiscordPTB.dmg";
-        hash = "sha256-TMd586LFm8B0TxxlM50MaeAtsWLuV1nlCHyYYb0sBOo=";
+        hash = "sha256-Fmh3EGjF3Xb2Vv39WEchrseo2t+4y1k+nLdb43GhJXI=";
       };
       canary = fetchurl {
         url = "https://canary.dl2.discordapp.net/apps/osx/${version}/DiscordCanary.dmg";