diff --git a/docs/requirements.txt b/docs/requirements.txt
index 75a5603a..34ca6a20 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,6 +1,7 @@
 semantic-link-sempy
 sphinx_rtd_theme
 pandas==2.0.3
+numpy<2.0.0 # 2.0.0 breaks the build
 # pyspark==3.5.0
 azure-identity==1.7.1
 azure-keyvault-secrets