diff --git a/pkgs/development/python-modules/chiapos/default.nix b/pkgs/development/python-modules/chiapos/default.nix
index a74bfb8495db..a5ebf97b151a 100644
--- a/pkgs/development/python-modules/chiapos/default.nix
+++ b/pkgs/development/python-modules/chiapos/default.nix
@@ -2,6 +2,7 @@
 , substituteAll
 , buildPythonPackage
 , fetchPypi
+, catch2
 , cmake
 , cxxopts
 , ghc_filesystem
@@ -27,6 +28,7 @@ buildPythonPackage rec {
     (substituteAll {
       src = ./dont_fetch_dependencies.patch;
       inherit cxxopts ghc_filesystem;
+      catch2_src = catch2.src;
       pybind11_src = pybind11.src;
     })
   ];
diff --git a/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch b/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch
index 85b7560f5d0d..05bd212e9a6c 100644
--- a/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch
+++ b/pkgs/development/python-modules/chiapos/dont_fetch_dependencies.patch
@@ -1,5 +1,5 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index b757b70..fcce055 100644
+index 5d7862b..c2d06a1 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
 @@ -21,23 +21,20 @@ include(${CMAKE_INSTALL_PREFIX}/share/cmake/pybind11/pybind11Config.cmake)
@@ -29,3 +29,13 @@ index b757b70..fcce055 100644
  )
  FetchContent_MakeAvailable(gulrak)
  
+@@ -150,8 +147,7 @@ ENDIF()
+ 
+ FetchContent_Declare(
+   Catch2
+-  GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+-  GIT_TAG        v2.13.7
++  SOURCE_DIR     @catch2_src@
+ )
+ FetchContent_MakeAvailable(Catch2)
+