diff --git a/luigi/contrib/mongodb.py b/luigi/contrib/mongodb.py
index 7e4a6069bf..cedfe8525c 100644
--- a/luigi/contrib/mongodb.py
+++ b/luigi/contrib/mongodb.py
@@ -190,7 +190,7 @@ def read(self):
         """
         Return if the target collection exists in the database
         """
-        return self._collection in self.get_index().collection_names()
+        return self._collection in self.get_index().list_collection_names()
 
 
 class MongoCountTarget(MongoTarget):
diff --git a/pyproject.toml b/pyproject.toml
index 8265c02afe..60397cb2e3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,7 +76,7 @@ common = [
   "psutil<4.0",
   "pygments",
   "pyhive[presto]==0.6.1",
-  "pymongo==3.4.0",
+  "pymongo>=4.15.1",
   "pytest",
   "pytest-cov",
   "requests>=2.20.0,<=2.31.0",