diff --git a/.gitignore b/.gitignore
index 162bd2b67bdf6a28be7a361b8418e4e31d542854..d01cda8e11779a2fa3e3333fd176e2e77e02fd21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -152,3 +152,6 @@ x509.genkey
 
 # Clang's compilation database file
 /compile_commands.json
+
+# Documentation toolchain
+sphinx_*/