diff --git a/threadpoolctl.py b/threadpoolctl.py
index e6ac58d8..ceed5b88 100644
--- a/threadpoolctl.py
+++ b/threadpoolctl.py
@@ -1132,7 +1132,12 @@ def _find_libraries_pyodide(self):
             )
             return
 
-        for filepath in LDSO.loadedLibsByName.as_object_map():
+        if hasattr(LDSO.loadedLibsByName, "as_py_json"):  # Pyodide >= 0.29
+            libs_iter = LDSO.loadedLibsByName.as_py_json()
+        else:
+            libs_iter = LDSO.loadedLibsByName.as_object_map()  # Pyodide < 0.29
+
+        for filepath in libs_iter:
             # Some libraries are duplicated by Pyodide and do not exist in the
             # filesystem, so we first check for the existence of the file. For
             # more details, see