diff --git a/requirements.txt b/requirements.txt
index 07b4601d..b70fc901 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 breathe==4.9.1
 sphinx==1.7.5
 docutils==0.14
-sphinx_rtd_theme
\ No newline at end of file
+sphinx_rtd_theme
+sphinx-intl==2.0.0
\ No newline at end of file