diff --git a/graphviz_py/parser.py b/graphviz_py/parser.py
index 4a9b119..1e037a5 100644
--- a/graphviz_py/parser.py
+++ b/graphviz_py/parser.py
@@ -50,7 +50,7 @@ def convert(python_graphviz: str, arguments: List[str]) -> str:
 
                 output = str(output)
             else:
-                exec(py_code)
+                exec(py_code, globals())
                 output = ""
         except Exception as ex:
             raise Exception(f"Error while processing: {expression}", ex)
diff --git a/pyproject.toml b/pyproject.toml
index 0596c83..89d8e13 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "graphviz-py"
-version = "1.0.6"
+version = "1.0.7"
 description = "Allows Python code execution inside of graphviz diagrams."
 authors = ["Alwin Schuster <contact@alwinschuster.at>"]
 license = 'MPL-2.0'