diff --git a/changes/241.feature.rst b/changes/241.feature.rst
new file mode 100644
index 0000000..4076f02
--- /dev/null
+++ b/changes/241.feature.rst
@@ -0,0 +1 @@
+Constants now include START and END.
diff --git a/src/travertino/constants.py b/src/travertino/constants.py
index 2dcd325..5460c39 100644
--- a/src/travertino/constants.py
+++ b/src/travertino/constants.py
@@ -8,6 +8,8 @@
 TOP = "top"
 BOTTOM = "bottom"
 CENTER = "center"
+START = "start"
+END = "end"
 
 ######################################################################
 # Direction