diff --git a/pkgs/applications/networking/flent/default.nix b/pkgs/applications/networking/flent/default.nix
index 9a0bb0104d4..90ff868d6be 100644
--- a/pkgs/applications/networking/flent/default.nix
+++ b/pkgs/applications/networking/flent/default.nix
@@ -6,8 +6,8 @@ buildPythonApplication rec {
   src = fetchFromGitHub {
     owner = "tohojo";
     repo = "flent";
-    rev = version;
-    sha256 = "0rl4ahynl6ymw7r04vpg9p90pplrxc41rjlzvm0swxsvpw40yvkm";
+    rev = "v${version}";
+    sha256 = "1llcdakk0nk9xlpjjz7mv4a80yq4sjnbqhaqvyj9m6lbcxgssh2r";
   };
 
   buildInputs = [ netperf ];