diff --git a/pkgs/development/python-modules/chiapos/default.nix b/pkgs/development/python-modules/chiapos/default.nix
index e0a86f499a2a..e9f4e3266543 100644
--- a/pkgs/development/python-modules/chiapos/default.nix
+++ b/pkgs/development/python-modules/chiapos/default.nix
@@ -13,12 +13,12 @@
 
 buildPythonPackage rec {
   pname = "chiapos";
-  version = "1.0.2";
+  version = "1.0.3";
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "09mwj9m9rcvcb3zn6v2xykgd4a9lpwl6c86nwl8d1iqr82gb5hb5";
+    sha256 = "sha256-2Ye0gaOsv/Hg1363E6+NmezsK9EcLEZVKKUHikM2hr0=";
   };
 
   patches = [
diff --git a/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch b/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch
index ca18fd292ca8..dc1cfddcc41d 100644
--- a/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch
+++ b/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch
@@ -23,7 +23,7 @@ index 9b4a2f5..86f849c 100644
  FetchContent_Declare(
    gulrak
 -  GIT_REPOSITORY https://github.com/gulrak/filesystem.git
--  GIT_TAG        v1.5.4
+-  GIT_TAG        v1.5.6
 +  SOURCE_DIR @ghc_filesystem@
  )
  FetchContent_MakeAvailable(gulrak)