diff --git a/pkgs/development/python-modules/july/default.nix b/pkgs/development/python-modules/july/default.nix
new file mode 100644
index 000000000000..b444f54e3f73
--- /dev/null
+++ b/pkgs/development/python-modules/july/default.nix
@@ -0,0 +1,52 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchpatch,
+  fetchPypi,
+
+  matplotlib,
+  numpy,
+
+  setuptools,
+}:
+
+buildPythonPackage rec {
+  pname = "july";
+  version = "0.1.3";
+  pyproject = true;
+
+  # No tags on GitHub
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-0xXCSSEKf2COJ9IHfuy+vpC/Zieg+q6TTabEFmUspCM=";
+  };
+
+  patches = [
+    # Fixes compatibility with current matplotlib versions
+    (fetchpatch {
+      url = "https://github.com/e-hulten/july/pull/44/commits/e5ff842bc98d3963c788737fff1b9086569b7d0a.patch";
+      hash = "sha256-zgeUkDWCfAebt1rgDZgMUVgQF81NWGrG2tmSj4/ncYA=";
+    })
+  ];
+
+  build-system = [
+    setuptools
+  ];
+
+  dependencies = [
+    matplotlib
+    numpy
+  ];
+
+  pythonImportsCheck = [ "july" ];
+
+  # No tests
+  doCheck = false;
+
+  meta = {
+    description = "Small library for creating pretty heatmaps of daily data.";
+    homepage = "https://github.com/e-hulten/july";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ flokli ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index e55fc8f1efc8..1f055b73bc97 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7189,6 +7189,8 @@ self: super: with self; {
 
   julius = callPackage ../development/python-modules/julius { };
 
+  july = callPackage ../development/python-modules/july { };
+
   june-analytics-python = callPackage ../development/python-modules/june-analytics-python { };
 
   junit-xml = callPackage ../development/python-modules/junit-xml { };