diff --git a/pkgs/development/python-modules/buildbot/default.nix b/pkgs/development/python-modules/buildbot/default.nix
index 31a342b7621..8ecd4e6e28e 100644
--- a/pkgs/development/python-modules/buildbot/default.nix
+++ b/pkgs/development/python-modules/buildbot/default.nix
@@ -25,11 +25,11 @@ let
 
   package = buildPythonPackage rec {
     pname = "buildbot";
-    version = "2.9.2";
+    version = "2.9.4";
 
     src = fetchPypi {
       inherit pname version;
-      sha256 = "019xfxjnyfi69d5sm3alvib24g8giqlvc102p8hqg8mfm7hc9z2v";
+      sha256 = "1d1sviyxs67wcrzlq74hbwkc00y60fw1kdp3nyml6z43zkq9kd6s";
     };
 
     propagatedBuildInputs = [
diff --git a/pkgs/development/python-modules/buildbot/pkg.nix b/pkgs/development/python-modules/buildbot/pkg.nix
index 70073eb5c9a..3111aba34ec 100644
--- a/pkgs/development/python-modules/buildbot/pkg.nix
+++ b/pkgs/development/python-modules/buildbot/pkg.nix
@@ -6,7 +6,7 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "01s58zi72drv4lwn6jg6i5mrpf3mpq74761z6iwx5hsdnqg1hxai";
+    sha256 = "1h5fyigfyzibshhmh6rdq4zy58hzxvwfxnxk5l9qppwkdp7yj3n4";
   };
 
   postPatch = ''
diff --git a/pkgs/development/python-modules/buildbot/plugins.nix b/pkgs/development/python-modules/buildbot/plugins.nix
index 43bc8717e59..e34569a6130 100644
--- a/pkgs/development/python-modules/buildbot/plugins.nix
+++ b/pkgs/development/python-modules/buildbot/plugins.nix
@@ -7,7 +7,7 @@
 
     src = fetchPypi {
       inherit pname version;
-      sha256 = "1z5sca2ksbr1j6p0kr8i9a61c46mdmbbd6hvc6407c3z5393mp30";
+      sha256 = "0r062hx1wks35ggq0ky60d8k95ai9sidg5k0zpldnmd34gfgpmfq";
     };
 
     # Remove unneccessary circular dependency on buildbot
@@ -34,7 +34,7 @@
 
     src = fetchPypi {
       inherit pname version;
-      sha256 = "1kz54zlc2yr9cjvw7rihcx7hfk245r6yh4mfyala38jby3hd68p0";
+      sha256 = "1jlh73hxm2skyacz3lf4pifxnh2xxjnxhryk6d1bzi4wi0q44ccb";
     };
 
     buildInputs = [ buildbot-pkg ];
@@ -56,7 +56,7 @@
 
     src = fetchPypi {
       inherit pname version;
-      sha256 = "0ac0dzldxl4j9cb4kpmhjwf5m1zjjvcg0hx9kghallab0sk1198p";
+      sha256 = "11qwzrqy284k97wl1m4piy0vvshckyfvs529s33jm74xbs12gx0y";
     };
 
     buildInputs = [ buildbot-pkg ];
@@ -78,7 +78,7 @@
 
     src = fetchPypi {
       inherit pname version;
-      sha256 = "1m41l2d6yb4mbg1ybn7q6wmkfvwssmfb4inmpwyvy55bcvgyixcm";
+      sha256 = "0m2nydgfxvm2xylykah5r6dfn4y39xnj35wm9rq5aknaj0r1a12g";
     };
 
     buildInputs = [ buildbot-pkg ];
@@ -100,7 +100,7 @@
 
     src = fetchPypi {
       inherit pname version;
-      sha256 = "1g58kr2zc7k94k0avly0vyyryg18gpsbick8mj5cz81s2pfmmyfq";
+      sha256 = "0653mxrj5f62wij1ybji964br7jvci5ahx44gp2y9rddvk3xcaza";
     };
 
     buildInputs = [ buildbot-pkg ];
diff --git a/pkgs/development/python-modules/buildbot/worker.nix b/pkgs/development/python-modules/buildbot/worker.nix
index 942c82f15a0..efa24fc5131 100644
--- a/pkgs/development/python-modules/buildbot/worker.nix
+++ b/pkgs/development/python-modules/buildbot/worker.nix
@@ -7,7 +7,7 @@ buildPythonPackage (rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1salrdirny1jpm53shb9dhzs1w7rbp5q7z2qpzrg1nmsh2kcd6ap";
+    sha256 = "1k3y6andf2ymx462zhh4bpnndnypkb2ja483i682zl2grbvxcjxx";
   };
 
   propagatedBuildInputs = [ twisted future ];