diff --git a/pkgs/applications/misc/stardict/stardict.nix b/pkgs/applications/misc/stardict/stardict.nix
index 600642f488a..16ca7957c12 100644
--- a/pkgs/applications/misc/stardict/stardict.nix
+++ b/pkgs/applications/misc/stardict/stardict.nix
@@ -40,5 +40,6 @@ stdenv.mkDerivation rec {
     description = "An international dictionary supporting fuzzy and glob style matching";
     license = stdenv.lib.licenses.lgpl3;
     maintainers = with stdenv.lib.maintainers; [qknight];
+    broken = true;
   };
 }
diff --git a/pkgs/development/tools/guile/g-wrap/default.nix b/pkgs/development/tools/guile/g-wrap/default.nix
index 14777b95b85..6cce86a8062 100644
--- a/pkgs/development/tools/guile/g-wrap/default.nix
+++ b/pkgs/development/tools/guile/g-wrap/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   name = "g-wrap-1.9.15";
   src = fetchurl {
     url = "mirror://savannah/g-wrap/${name}.tar.gz";
-    sha256 = "140fcvp24pqmfmiibhjxl3s75hj26ln7pkl2wxas84lnchbj9m4d";
+    sha256 = "0ak0bha37dfpj9kmyw1r8fj8nva639aw5xr66wr5gd3l1rqf5xhg";
   };
 
   # Note: Glib support is optional, but it's quite useful (e.g., it's
diff --git a/pkgs/servers/samba/4.x.nix b/pkgs/servers/samba/4.x.nix
index 4ef47122c28..0f3b9bb7a65 100644
--- a/pkgs/servers/samba/4.x.nix
+++ b/pkgs/servers/samba/4.x.nix
@@ -18,11 +18,11 @@
 with lib;
 
 stdenv.mkDerivation rec {
-  name = "samba-4.3.1";
+  name = "samba-4.3.6";
 
   src = fetchurl {
     url = "mirror://samba/pub/samba/stable/${name}.tar.gz";
-    sha256 = "10ic9pxsk3ml5ycmi0bql8wraxhbr2l4fhzd0qwmiqmrjl6sh24r";
+    sha256 = "0929fpk2pq4v389naai519xvsm9bzpar4jlgjxwlx1cnn6jyql9j";
   };
 
   patches =