diff --git a/home-pc.nix b/home-pc.nix
index 30e0fc2..743ca6a 100644
--- a/home-pc.nix
+++ b/home-pc.nix
@@ -51,5 +51,5 @@
   };
 
   # only change this when specified in release notes
-  system.stateVersion = "20.09";
+  system.stateVersion = "21.05";
 }
diff --git a/home/felschr-rpi4.nix b/home/felschr-rpi4.nix
index 76471e9..0b6abd8 100644
--- a/home/felschr-rpi4.nix
+++ b/home/felschr-rpi4.nix
@@ -33,5 +33,5 @@
     }
   '';
 
-  home.stateVersion = "20.09";
+  home.stateVersion = "21.05";
 }
diff --git a/home/felschr-work.nix b/home/felschr-work.nix
index 05a6dee..714bfd8 100644
--- a/home/felschr-work.nix
+++ b/home/felschr-work.nix
@@ -62,5 +62,5 @@ with pkgs; {
     dos2unix
   ];
 
-  home.stateVersion = "20.09";
+  home.stateVersion = "21.05";
 }
diff --git a/home/felschr.nix b/home/felschr.nix
index 962507f..0f966ff 100644
--- a/home/felschr.nix
+++ b/home/felschr.nix
@@ -91,5 +91,5 @@
     ledger-live-desktop
   ];
 
-  home.stateVersion = "20.09";
+  home.stateVersion = "21.05";
 }
diff --git a/rpi4.nix b/rpi4.nix
index 40cd6b1..1030e34 100644
--- a/rpi4.nix
+++ b/rpi4.nix
@@ -99,5 +99,5 @@ with builtins; {
   };
 
   # only change this when specified in release notes
-  system.stateVersion = "20.09";
+  system.stateVersion = "21.05";
 }
diff --git a/work-pc.nix b/work-pc.nix
index 71d440e..c53da45 100644
--- a/work-pc.nix
+++ b/work-pc.nix
@@ -44,5 +44,5 @@
   };
 
   # only change this when specified in release notes
-  system.stateVersion = "20.09";
+  system.stateVersion = "21.05";
 }