diff --git a/requirements.txt b/requirements.txt
index 3ebcce67e..48d1640a6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==2.0.1
 sphinxcontrib-jquery==4.1
 sphinxcontrib-jsmath==1.0.1
-sphinxcontrib-phpdomain==0.9.0
+sphinxcontrib-phpdomain==0.11.0
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
 urllib3==1.26.15