diff --git a/.gitignore b/.gitignore
index 0e48e40..78d82b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+# Sphinx documentation
+docs/_build/
+
 # autogenerated files:
 /schema/intermediate/s0/generated/
 /schema/intermediate/s1/