diff --git a/pkgs/tools/security/slowhttptest/default.nix b/pkgs/tools/security/slowhttptest/default.nix
index 5dce5d5439a..b4c2b0efeec 100644
--- a/pkgs/tools/security/slowhttptest/default.nix
+++ b/pkgs/tools/security/slowhttptest/default.nix
@@ -6,13 +6,13 @@
 
 stdenv.mkDerivation rec {
   pname = "slowhttptest";
-  version = "1.8.2";
+  version = "1.9.0";
 
   src = fetchFromGitHub {
     owner = "shekyan";
     repo = pname;
     rev = "v${version}";
-    sha256 = "1xv2j3hl4zj0s2cxcsvlwgridh9ap4g84g7c4918d03id15wydcx";
+    sha256 = "sha256-rIvd3LykVAbDXtFWZ1EQ+QKeALzqwK6pq7In0BsCOFo=";
   };
 
   buildInputs = [ openssl ];