diff --git a/pkgs/development/python-modules/cocotb/default.nix b/pkgs/development/python-modules/cocotb/default.nix
new file mode 100644
index 00000000000..228ac7904ec
--- /dev/null
+++ b/pkgs/development/python-modules/cocotb/default.nix
@@ -0,0 +1,43 @@
+{ stdenv, buildPythonPackage, fetchFromGitHub, setuptools, swig, verilog }:
+
+buildPythonPackage rec {
+  pname = "cocotb";
+  version = "1.2.0";
+
+  src = fetchFromGitHub {
+    owner = pname;
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "091q63jcm87xggqgqi44lw2vjxhl1v4yl0mv2c76hgavb29w4w5y";
+  };
+
+  propagatedBuildInputs = [
+    setuptools
+  ];
+
+  postPatch = ''
+    patchShebangs bin/*.py
+
+    # POSIX portability (TODO: upstream this)
+    for f in \
+      cocotb/share/makefiles/Makefile.* \
+      cocotb/share/makefiles/simulators/Makefile.*
+    do
+      substituteInPlace $f --replace 'shell which' 'shell command -v'
+    done
+  '';
+
+  checkInputs = [ swig verilog ];
+
+  checkPhase = ''
+    export PATH=$out/bin:$PATH
+    make test
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Coroutine based cosimulation library for writing VHDL and Verilog testbenches in Python";
+    homepage = https://github.com/cocotb/cocotb;
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ matthuszagh ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index e1e6a62d206..45b5ebfbe85 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -489,6 +489,8 @@ in {
 
   cnvkit = callPackage ../development/python-modules/cnvkit { };
 
+  cocotb = callPackage ../development/python-modules/cocotb { };
+
   connexion = callPackage ../development/python-modules/connexion { };
 
   cozy = callPackage ../development/python-modules/cozy { };