eddieantonio
diff --git a/‎poetry.lock
+63-24 b/‎poetry.lock
+63-24
diff --git a/‎pyproject.toml
+6 b/‎pyproject.toml
+6
@@ -17,6 +17,12 @@ classifiers = [
 [tool.poetry.dependencies]
 python = "^3.6"
 
+# Optional dependency:
+varname = {version = ">=0.1", optional = true}
+
+[tool.poetry.extras]
+varname = ["varname"]
+
 [tool.poetry.dev-dependencies]
 pytest = "^6.2.1"
 mypy = "^0.790"