diff --git a/.gitignore b/.gitignore
index 0c5f5c78..dc5b29f5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,10 @@ main-*.pdf
 graphics/*.pdf_tex
 democode.tex
 
+# plantuml
+*-plantuml.latex
+*-plantuml.txt
+
 # latexindent
 *.bak
 *.bak?