diff --git a/pkgs/applications/misc/polar-bookshelf/default.nix b/pkgs/applications/misc/polar-bookshelf/default.nix
index 9625c07bc016..18bd46a30bd5 100644
--- a/pkgs/applications/misc/polar-bookshelf/default.nix
+++ b/pkgs/applications/misc/polar-bookshelf/default.nix
@@ -10,12 +10,12 @@
 
 stdenv.mkDerivation rec {
   name = "polar-bookshelf-${version}";
-  version = "1.8.0";
+  version = "1.9.0";
 
   # fetching a .deb because there's no easy way to package this Electron app
   src = fetchurl {
     url = "https://github.com/burtonator/polar-bookshelf/releases/download/v${version}/polar-bookshelf-${version}-amd64.deb";
-    sha256 = "0zbk8msc5p6ivldkznab8klzsgd31hd4hs5kkjzw1iy082cmrjv5";
+    sha256 = "1kvgmb7kvqc6pzcr0yp8x9mxwymiy85yr0cx3k2sclqlksrc5dzx";
   };
 
   buildInputs = [