diff --git a/pkgs/applications/misc/koreader/default.nix b/pkgs/applications/misc/koreader/default.nix
index 0a082cce3274..e2480dd18bde 100644
--- a/pkgs/applications/misc/koreader/default.nix
+++ b/pkgs/applications/misc/koreader/default.nix
@@ -13,12 +13,12 @@
 let font-droid = nerdfonts.override { fonts = [ "DroidSansMono" ]; };
 in stdenv.mkDerivation rec {
   pname = "koreader";
-  version = "2022.03.1";
+  version = "2022.05.1";
 
   src = fetchurl {
     url =
       "https://github.com/koreader/koreader/releases/download/v${version}/koreader-${version}-amd64.deb";
-    sha256 = "sha256-ZoqITWPR60G4xY9InrtIY9rCWUk0PidGFZokHLWl5ps=";
+    sha256 = "sha256-Uz8fzF/SdKNRywoIb8B/iHRuXDwRyw7wH7bL9vRzPfY=";
   };
 
   sourceRoot = ".";