diff --git a/pkgs/applications/networking/cluster/mesos/default.nix b/pkgs/applications/networking/cluster/mesos/default.nix
index ec152fdc4648..ac1feee5d72b 100644
--- a/pkgs/applications/networking/cluster/mesos/default.nix
+++ b/pkgs/applications/networking/cluster/mesos/default.nix
@@ -258,5 +258,6 @@ in stdenv.mkDerivation rec {
     description = "A cluster manager that provides efficient resource isolation and sharing across distributed applications, or frameworks";
     maintainers = with maintainers; [ cstrahan offline ];
     platforms   = platforms.unix;
+    broken = true; # Broken since 2019-10-22 (https://hydra.nixos.org/build/115475123)
   };
 }
diff --git a/pkgs/development/libraries/swiften/default.nix b/pkgs/development/libraries/swiften/default.nix
index c8c60c1f8ea6..edf882894a5b 100644
--- a/pkgs/development/libraries/swiften/default.nix
+++ b/pkgs/development/libraries/swiften/default.nix
@@ -33,5 +33,6 @@ stdenv.mkDerivation rec {
     license     = licenses.gpl2Plus;
     platforms   = platforms.linux;
     maintainers = [ maintainers.twey ];
+    broken = true; # Broken since 2019-11-20 (https://hydra.nixos.org/build/114681755)
   };
 }
diff --git a/pkgs/games/pingus/default.nix b/pkgs/games/pingus/default.nix
index 628493a34b1b..297911c5d15f 100644
--- a/pkgs/games/pingus/default.nix
+++ b/pkgs/games/pingus/default.nix
@@ -33,5 +33,6 @@ stdenv.mkDerivation {
     platforms = stdenv.lib.platforms.linux;
     maintainers = [stdenv.lib.maintainers.raskin];
     license = stdenv.lib.licenses.gpl3;
+    broken = true; # Broken since 2019-11-20 (https://hydra.nixos.org/build/114721280)
   };
 }