diff --git a/pkgs/development/python-modules/srt/default.nix b/pkgs/development/python-modules/srt/default.nix
index 1e91aad7b16d..62d03be0b177 100644
--- a/pkgs/development/python-modules/srt/default.nix
+++ b/pkgs/development/python-modules/srt/default.nix
@@ -8,13 +8,13 @@
 
 buildPythonPackage rec {
   pname = "srt";
-  version = "3.5.2";
+  version = "3.5.3";
 
   disabled = pythonOlder "2.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "7aa4ad5ce4126d3f53b3e7bc4edaa86653d0378bf1c0b1ab8c59f5ab41384450";
+    sha256 = "sha256-SIQxUEOk8HQP0fh47WyqN2rAbXDhNfMGptxEYy7tDMA=";
   };
 
   nativeCheckInputs = [