diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 1a2f0d182a4..b79b0ecf6be 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -212,3 +212,6 @@ multidict>=6.4.2
 # rpds-py frequently updates cargo causing build failures
 # No wheels upstream available for armhf & armv7
 rpds-py==0.26.0
+
+# Constraint num2words to 0.5.14 as 0.5.15 and 0.5.16 were removed from PyPI
+num2words==0.5.14
diff --git a/script/gen_requirements_all.py b/script/gen_requirements_all.py
index b13f586439d..a62f2f62bc1 100755
--- a/script/gen_requirements_all.py
+++ b/script/gen_requirements_all.py
@@ -238,6 +238,9 @@ multidict>=6.4.2
 # rpds-py frequently updates cargo causing build failures
 # No wheels upstream available for armhf & armv7
 rpds-py==0.26.0
+
+# Constraint num2words to 0.5.14 as 0.5.15 and 0.5.16 were removed from PyPI
+num2words==0.5.14
 """
 
 GENERATED_MESSAGE = (