diff --git a/src/py_d2/connection.py b/src/py_d2/connection.py
index 215a354..b65f8f1 100644
--- a/src/py_d2/connection.py
+++ b/src/py_d2/connection.py
@@ -26,3 +26,11 @@ def lines(self) -> List[str]:
 
     def __repr__(self) -> str:
         return "\n".join(self.lines())
+
+    def __hash__(self):
+        return hash((self.shape_1, self.shape_2, self.label, self.direction))
+
+    def __eq__(self, other) -> bool:
+        if ((self.shape_1, self.shape_2, self.direction, self.label) == (other.shape_1, other.shape_2, other.direction, other.label)):
+            return True
+        return False
diff --git a/tests/test_py_d2/test_d2_connection.py b/tests/test_py_d2/test_d2_connection.py
index 954992c..2c03071 100644
--- a/tests/test_py_d2/test_d2_connection.py
+++ b/tests/test_py_d2/test_d2_connection.py
@@ -31,3 +31,9 @@ def test_d2_connection_direction_both():
 def test_d2_connection_direction_none():
     connection = D2Connection(shape_1="a", shape_2="b", direction=Direction.NONE)
     assert str(connection) == "a -- b"
+
+
+def test_d2_connection_uniqueness():
+    connection = D2Connection(shape_1="a", shape_2="b", direction=Direction.TO)
+    connection2 = D2Connection(shape_1="a", shape_2="b", direction=Direction.TO)
+    assert connection == connection2