diff --git a/pkgs/development/libraries/skalibs/default.nix b/pkgs/development/libraries/skalibs/default.nix
index b87662a6e342..29cc477a279d 100644
--- a/pkgs/development/libraries/skalibs/default.nix
+++ b/pkgs/development/libraries/skalibs/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  version = "2.4.0.1";
+  version = "2.6.0.1";
 
 in stdenv.mkDerivation rec {
 
@@ -11,7 +11,7 @@ in stdenv.mkDerivation rec {
   src = fetchgit {
     url = "git://git.skarnet.org/skalibs";
     rev = "refs/tags/v${version}";
-    sha256 = "1sdzm2vd9mxlwxbmjajb6n1n13dpsavdap2nbbnyx4wnzixxx9k7";
+    sha256 = "0skdv3wff1i78hb0y771apw0cak5rzxbwbh6l922snfm01z9k1ws";
   };
 
   dontDisableStatic = true;
diff --git a/pkgs/os-specific/linux/s6-linux-utils/default.nix b/pkgs/os-specific/linux/s6-linux-utils/default.nix
index 52d7446e48cb..db494ec2493f 100644
--- a/pkgs/os-specific/linux/s6-linux-utils/default.nix
+++ b/pkgs/os-specific/linux/s6-linux-utils/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  version = "2.2.0.0";
+  version = "2.4.0.2";
 
 in stdenv.mkDerivation rec {
 
@@ -10,7 +10,7 @@ in stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "http://www.skarnet.org/software/s6-linux-utils/${name}.tar.gz";
-    sha256 = "1y9mva7wk1ca2djq3qjh7hz756zk57yv7ljdnldn7k7jzfmlaxsq";
+    sha256 = "0245rmk7wfyyfsi4g7f0niprwlvqlwkbyjxflb8kkbvhwfdavqip";
   };
 
   dontDisableStatic = true;
diff --git a/pkgs/tools/misc/execline/default.nix b/pkgs/tools/misc/execline/default.nix
index 5010343d3c71..6a13d289efc0 100644
--- a/pkgs/tools/misc/execline/default.nix
+++ b/pkgs/tools/misc/execline/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  version = "2.2.0.0";
+  version = "2.3.0.3";
 
 in stdenv.mkDerivation rec {
 
@@ -11,7 +11,7 @@ in stdenv.mkDerivation rec {
   src = fetchgit {
     url = "git://git.skarnet.org/execline";
     rev = "refs/tags/v${version}";
-    sha256 = "1795n6s0sp9hw8amx2hs9r395gv4c5sn63g077g1gal1vcpkcssn";
+    sha256 = "1q0izb8ajzxl36fjpy4rn63sz01055r9s33fga99jprdmkkfzz6x";
   };
 
   dontDisableStatic = true;
diff --git a/pkgs/tools/misc/s6-portable-utils/default.nix b/pkgs/tools/misc/s6-portable-utils/default.nix
index bf5a158625c5..a9fefe446fe0 100644
--- a/pkgs/tools/misc/s6-portable-utils/default.nix
+++ b/pkgs/tools/misc/s6-portable-utils/default.nix
@@ -4,11 +4,11 @@ with stdenv.lib;
 
 stdenv.mkDerivation rec {
   name = "s6-portable-utils-${version}";
-  version = "2.1.0.0";
+  version = "2.2.1.1";
 
   src = fetchurl {
     url = "http://www.skarnet.org/software/s6-portable-utils/${name}.tar.gz";
-    sha256 = "0khw5ljmlghvl4hyrf4vd0hl5rrmsspchi8w4xgniwfip6vlbqfd";
+    sha256 = "0ca5iiq3n6isj64jb81xpwjzjx1q8jg145nnnn91ra2qqk93kqka";
   };
 
   dontDisableStatic = true;
diff --git a/pkgs/tools/networking/s6-dns/default.nix b/pkgs/tools/networking/s6-dns/default.nix
index 8ea134843c3e..7134e969fd08 100644
--- a/pkgs/tools/networking/s6-dns/default.nix
+++ b/pkgs/tools/networking/s6-dns/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  version = "2.1.0.0";
+  version = "2.2.0.1";
 
 in stdenv.mkDerivation rec {
 
@@ -11,7 +11,7 @@ in stdenv.mkDerivation rec {
   src = fetchgit {
     url = "git://git.skarnet.org/s6-dns";
     rev = "refs/tags/v${version}";
-    sha256 = "126ikznsw0hlk4mmf03yxzfnvcw823g5il1vfs3a5fa9q26xyc72";
+    sha256 = "10qvkh608nsx8gqs3pj4pb8aivwpshbmjw2766grgmrb35d31brl";
   };
 
   dontDisableStatic = true;
diff --git a/pkgs/tools/networking/s6-networking/default.nix b/pkgs/tools/networking/s6-networking/default.nix
index 6574a02bb921..3239a8f49e65 100644
--- a/pkgs/tools/networking/s6-networking/default.nix
+++ b/pkgs/tools/networking/s6-networking/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  version = "2.2.1.0";
+  version = "2.3.0.2";
 
 in stdenv.mkDerivation rec {
 
@@ -11,7 +11,7 @@ in stdenv.mkDerivation rec {
   src = fetchgit {
     url = "git://git.skarnet.org/s6-networking";
     rev = "refs/tags/v${version}";
-    sha256 = "0msfssd42pdwch0z8rhrm7hd4ps9d730az92vg0pnz769xs8kjx0";
+    sha256 = "1qrhca8yjaysrqf7nx3yjfyfi9yly3rxpgrd2sqj0a0ckk73rv42";
   };
 
   dontDisableStatic = true;
diff --git a/pkgs/tools/system/s6-rc/default.nix b/pkgs/tools/system/s6-rc/default.nix
index 763d44066685..13ce2414abf0 100644
--- a/pkgs/tools/system/s6-rc/default.nix
+++ b/pkgs/tools/system/s6-rc/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  version = "0.1.0.0";
+  version = "0.3.0.0";
 
 in stdenv.mkDerivation rec {
 
@@ -11,7 +11,7 @@ in stdenv.mkDerivation rec {
   src = fetchgit {
     url = "git://git.skarnet.org/s6-rc";
     rev = "refs/tags/v${version}";
-    sha256 = "1izjss1vfmkrkbgpzxlh0krkd2zin9d77ykr6i08rhixz7c2am0r";
+    sha256 = "174a3l92nkhxrx8gq36xmb5a7krj40iz1xdiii25nxwjfiw5ynfb";
   };
 
   dontDisableStatic = true;
diff --git a/pkgs/tools/system/s6/default.nix b/pkgs/tools/system/s6/default.nix
index 67acb8ac3dca..b8607a983570 100644
--- a/pkgs/tools/system/s6/default.nix
+++ b/pkgs/tools/system/s6/default.nix
@@ -2,7 +2,7 @@
 
 let
 
-  version = "2.4.0.0";
+  version = "2.6.1.1";
 
 in stdenv.mkDerivation rec {
 
@@ -11,7 +11,7 @@ in stdenv.mkDerivation rec {
   src = fetchgit {
     url = "git://git.skarnet.org/s6";
     rev = "refs/tags/v${version}";
-    sha256 = "0yf9apl05g1gxqwh01yd1iyg0xm50ywnlwp4szd08sg0srmvys16";
+    sha256 = "162hng8xcwjp8pr4d78zq3f82lm9c6ldbcfll0mjsmnxdds5hrsg";
   };
 
   dontDisableStatic = true;