diff --git a/pkgs/tools/networking/cassowary/default.nix b/pkgs/tools/networking/cassowary/default.nix
index 2fa92e073076..5cb699531b1a 100644
--- a/pkgs/tools/networking/cassowary/default.nix
+++ b/pkgs/tools/networking/cassowary/default.nix
@@ -2,16 +2,16 @@
 
 buildGoModule rec {
   pname = "cassowary";
-  version = "0.16.0";
+  version = "0.17.0";
 
   src = fetchFromGitHub {
     owner = "rogerwelin";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-wRpITbxtn2sHw7kkQ8rnCPQCU0JS6smdQLq1Z/RyeHo=";
+    sha256 = "sha256-lC3GOS4hugRoQbJYVGv6kl3h6xMAukcOdV2m/u3Wgkk=";
   };
 
-  vendorHash = "sha256-b77Sje5OsysTRRbzgdLnTlLLyLIACjD4c/oS9zyI0d8=";
+  vendorHash = "sha256-YP9q9lL2A9ERhzbJBIFKsYsgvy5xYeUO3ekyQdh97f8=";
 
   ldflags = [ "-s" "-w" "-X main.version=${version}" ];