diff --git a/requirements-dev.txt b/requirements-dev.txt
index e178a448..9167a60f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,3 +1,3 @@
 sphinx==7.1.2
-sphinx-wagtail-theme-6.3.0
+sphinx-wagtail-theme==6.3.0
 pytest==8.0.0