diff --git a/material/plugins/search/plugin.py b/material/plugins/search/plugin.py
index 120e7e23d9d..9f12a3e86f4 100644
--- a/material/plugins/search/plugin.py
+++ b/material/plugins/search/plugin.py
@@ -215,7 +215,7 @@ def create_entry_for_section(self, section, toc, url, page):
             entry["tags"] = []
             for name in tags:
                 if name and isinstance(name, (str, int, float, bool)):
-                    entry["tags"].append(name)
+                    entry["tags"].append(str(name))
 
         # Set document boost
         search = page.meta.get("search") or {}
diff --git a/src/plugins/search/plugin.py b/src/plugins/search/plugin.py
index 120e7e23d9d..9f12a3e86f4 100644
--- a/src/plugins/search/plugin.py
+++ b/src/plugins/search/plugin.py
@@ -215,7 +215,7 @@ def create_entry_for_section(self, section, toc, url, page):
             entry["tags"] = []
             for name in tags:
                 if name and isinstance(name, (str, int, float, bool)):
-                    entry["tags"].append(name)
+                    entry["tags"].append(str(name))
 
         # Set document boost
         search = page.meta.get("search") or {}