diff --git a/README.md b/README.md
index f05e33a..77a2868 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,3 @@ Use optimistic locking to put DynamoDB records with auto-incrementing attributes
 
 - https://aws.amazon.com/blogs/aws/new-amazon-dynamodb-transactions/
 - https://bitesizedserverless.com/bite/reliable-auto-increments-in-dynamodb/
-
-## FIXME
-
-This package currently depends on code that is in a pull request for boto3 that is not yet merged or released.
-See https://github.com/boto/boto3/pull/4010.
diff --git a/dynamodb_autoincrement.py b/dynamodb_autoincrement.py
index 252c89c..d514ed4 100644
--- a/dynamodb_autoincrement.py
+++ b/dynamodb_autoincrement.py
@@ -9,6 +9,9 @@
 
 from mypy_boto3_dynamodb.service_resource import DynamoDBServiceResource
 
+# FIXME: remove instances of 'type: ignore[attr-defined]' below once
+# boto3-missing becomes unnecessary.
+
 
 PrimitiveDynamoDBValues = Optional[Union[str, int, float, Decimal, bool]]
 DynamoDBValues = Union[
@@ -33,18 +36,6 @@ class BaseDynamoDBAutoIncrement(ABC):
     def next(self, item: DynamoDBItem) -> tuple[Iterable[dict[str, Any]], str]:
         raise NotImplementedError
 
-    def _put_item(self, *, TableName, **kwargs):
-        # FIXME: DynamoDB resource does not have put_item method; emulate it
-        self.dynamodb.Table(TableName).put_item(**kwargs)
-
-    def _get_item(self, *, TableName, **kwargs):
-        # FIXME: DynamoDB resource does not have get_item method; emulate it
-        return self.dynamodb.Table(TableName).get_item(**kwargs)
-
-    def _query(self, *, TableName, **kwargs):
-        # FIXME: DynamoDB resource does not have put_item method; emulate it
-        return self.dynamodb.Table(TableName).query(**kwargs)
-
     def put(self, item: DynamoDBItem):
         TransactionCanceledException = (
             self.dynamodb.meta.client.exceptions.TransactionCanceledException
@@ -53,11 +44,9 @@ def put(self, item: DynamoDBItem):
             puts, next_counter = self.next(item)
             if self.dangerously:
                 for put in puts:
-                    self._put_item(**put)
+                    self.dynamodb.put_item(**put)  # type: ignore[attr-defined]
             else:
                 try:
-                    # FIXME: depends on an unmerged PR for boto3.
-                    # See https://github.com/boto/boto3/pull/4010
                     self.dynamodb.transact_write_items(  # type: ignore[attr-defined]
                         TransactItems=[{"Put": put} for put in puts]
                     )
@@ -69,7 +58,7 @@ def put(self, item: DynamoDBItem):
 class DynamoDBAutoIncrement(BaseDynamoDBAutoIncrement):
     def next(self, item):
         counter = (
-            self._get_item(
+            self.dynamodb.get_item(
                 AttributesToGet=[self.attribute_name],
                 Key=self.counter_table_key,
                 TableName=self.counter_table_name,
@@ -117,7 +106,7 @@ def next(self, item):
 
 class DynamoDBHistoryAutoIncrement(BaseDynamoDBAutoIncrement):
     def list(self) -> list[int]:
-        result = self._query(
+        result = self.dynamodb.query(  # type: ignore[attr-defined]
             TableName=self.table_name,
             ExpressionAttributeNames={
                 **{f"#{i}": key for i, key in enumerate(self.counter_table_key.keys())},
@@ -145,10 +134,10 @@ def get(self, version: Optional[int] = None) -> DynamoDBItem:
                 "TableName": self.table_name,
                 "Key": {**self.counter_table_key, self.attribute_name: version},
             }
-        return self._get_item(**kwargs).get("Item")
+        return self.dynamodb.get_item(**kwargs).get("Item")  # type: ignore[attr-defined]
 
     def next(self, item):
-        existing_item = self._get_item(
+        existing_item = self.dynamodb.get_item(
             TableName=self.counter_table_name,
             Key=self.counter_table_key,
         ).get("Item")
diff --git a/pyproject.toml b/pyproject.toml
index bdd637e..176f4ce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,8 @@ classifiers = [
     "Topic :: Database",
 ]
 dependencies = [
-    "boto3 @ git+https://github.com/lpsinger/boto3@dynamodb-resource-transact-write-items",
+    "boto3",
+    "boto3-missing",
     "boto3-stubs[dynamodb]",
 ]
 requires-python = ">=3.9"
diff --git a/test_dynamodb_autoincrement.py b/test_dynamodb_autoincrement.py
index f773e46..04155fc 100644
--- a/test_dynamodb_autoincrement.py
+++ b/test_dynamodb_autoincrement.py
@@ -91,19 +91,20 @@ def test_autoincrement_safely(autoincrement_safely, dynamodb, last_id):
     if last_id is None:
         next_id = 1
     else:
-        dynamodb.Table("autoincrement").put_item(
-            Item={"tableName": "widgets", "widgetID": last_id}
+        dynamodb.put_item(
+            TableName="autoincrement",
+            Item={"tableName": "widgets", "widgetID": last_id},
         )
         next_id = last_id + 1
 
     result = autoincrement_safely.put({"widgetName": "runcible spoon"})
     assert result == next_id
 
-    assert dynamodb.Table("widgets").scan()["Items"] == [
+    assert dynamodb.scan(TableName="widgets")["Items"] == [
         {"widgetID": next_id, "widgetName": "runcible spoon"},
     ]
 
-    assert dynamodb.Table("autoincrement").scan()["Items"] == [
+    assert dynamodb.scan(TableName="autoincrement")["Items"] == [
         {
             "tableName": "widgets",
             "widgetID": next_id,
@@ -152,7 +153,7 @@ def test_autoincrement_dangerously_fails_on_many_parallel_puts(
 @pytest.fixture(params=[None, {"widgetID": 1}, {"widgetID": 1, "version": 1}])
 def initial_item(request, create_tables, dynamodb):
     if request.param is not None:
-        dynamodb.Table("widgets").put_item(Item=request.param)
+        dynamodb.put_item(TableName="widgets", Item=request.param)
     return request.param
 
 
@@ -174,7 +175,7 @@ def test_autoincrement_version(
     )
     assert new_version == 1 + has_initial_item
 
-    history_items = dynamodb.Table("widgetHistory").query(
+    history_items = dynamodb.query(
         TableName="widgetHistory",
         KeyConditionExpression="widgetID = :widgetID",
         ExpressionAttributeValues={