diff --git a/pkgs/by-name/ca/calibre/package.nix b/pkgs/by-name/ca/calibre/package.nix
index d0b604fd2f1c..09ca09b319ca 100644
--- a/pkgs/by-name/ca/calibre/package.nix
+++ b/pkgs/by-name/ca/calibre/package.nix
@@ -33,11 +33,11 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "calibre";
-  version = "7.20.0";
+  version = "7.21.0";
 
   src = fetchurl {
     url = "https://download.calibre-ebook.com/${finalAttrs.version}/calibre-${finalAttrs.version}.tar.xz";
-    hash = "sha256-BhJEJsQKk/kJxycm/1mbtlrSaeFQPvWGGB9DUMidgII=";
+    hash = "sha256-61Nbclkt59sh8VHh3uRw0GvlDjlyOz1jrsFMMIuzPLE=";
   };
 
   patches = [
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
     (fetchpatch {
       name = "0007-Hardening-Qt-code.patch";
       url = "https://raw.githubusercontent.com/debian-calibre/calibre/debian/${finalAttrs.version}+ds-1/debian/patches/hardening/0007-Hardening-Qt-code.patch";
-      hash = "sha256-8tOxFCmZal+JxOz6LeuUr+TgX7IaxC9Ow73bMgFJPt8=";
+      hash = "sha256-9hi4T9LB7aklWASMR8hIuKBgZm2arDvORfmk9S8wgCA=";
     })
   ] ++ lib.optional (!unrarSupport) ./dont_build_unrar_plugin.patch;