diff --git a/lib/ansible/plugins/inventory/toml.py b/lib/ansible/plugins/inventory/toml.py
index 9bd439abdfb..31fe95fb56c 100644
--- a/lib/ansible/plugins/inventory/toml.py
+++ b/lib/ansible/plugins/inventory/toml.py
@@ -95,7 +95,7 @@ import os
 from functools import partial
 
 from ansible.errors import AnsibleFileNotFound, AnsibleParserError
-from ansible.module_utils._text import to_bytes, to_native
+from ansible.module_utils._text import to_bytes, to_native, to_text
 from ansible.module_utils.common._collections_compat import MutableMapping, MutableSequence
 from ansible.module_utils.six import string_types, text_type
 from ansible.parsing.yaml.objects import AnsibleSequence, AnsibleUnicode
@@ -211,8 +211,8 @@ class InventoryModule(BaseFileInventoryPlugin):
             raise AnsibleFileNotFound("Unable to retrieve file contents", file_name=file_name)
 
         try:
-            with open(b_file_name, 'r') as f:
-                return toml.load(f)
+            (b_data, private) = self.loader._get_file_contents(file_name)
+            return toml.loads(to_text(b_data, errors='surrogate_or_strict'))
         except toml.TomlDecodeError as e:
             raise AnsibleParserError(
                 'TOML file (%s) is invalid: %s' % (file_name, to_native(e)),
diff --git a/test/integration/targets/vault/inventory.toml b/test/integration/targets/vault/inventory.toml
new file mode 100644
index 00000000000..d97ed398a20
--- /dev/null
+++ b/test/integration/targets/vault/inventory.toml
@@ -0,0 +1,5 @@
+[vauled_group.hosts]
+vaulted_host_toml={ ansible_host="localhost", ansible_connection="local" }
+
+[vauled_group.vars]
+hello="world"
diff --git a/test/integration/targets/vault/runme.sh b/test/integration/targets/vault/runme.sh
index 6194aa70d2d..8bd35a8869f 100755
--- a/test/integration/targets/vault/runme.sh
+++ b/test/integration/targets/vault/runme.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 
 set -euvx
+source virtualenv.sh
+
 
 MYTMPDIR=$(mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir')
 trap 'rm -rf "${MYTMPDIR}"' EXIT
@@ -404,6 +406,14 @@ ansible-playbook test_vault_embedded.yml -i ../../inventory -v "$@" --vault-pass
 ansible-playbook test_vaulted_inventory.yml -i vaulted.inventory -v "$@" --vault-password-file vault-password
 ansible-playbook test_vaulted_template.yml -i ../../inventory -v "$@" --vault-password-file vault-password
 
+
+# install TOML for parse toml inventory
+# test playbooks using vaulted files(toml)
+pip install toml
+ansible-vault encrypt  ./inventory.toml -v "$@" --vault-password-file=./vault-password
+ansible-playbook test_vaulted_inventory_toml.yml -i ./inventory.toml -v "$@" --vault-password-file vault-password
+ansible-vault decrypt  ./inventory.toml -v "$@" --vault-password-file=./vault-password
+
 # test a playbook with a host_var whose value is non-ascii utf8 (see https://github.com/ansible/ansible/issues/37258)
 ansible-playbook -i ../../inventory -v "$@" --vault-id vault-password test_vaulted_utf8_value.yml
 
diff --git a/test/integration/targets/vault/test_vaulted_inventory_toml.yml b/test/integration/targets/vault/test_vaulted_inventory_toml.yml
new file mode 100644
index 00000000000..f6e2c5d6035
--- /dev/null
+++ b/test/integration/targets/vault/test_vaulted_inventory_toml.yml
@@ -0,0 +1,9 @@
+- hosts: vaulted_host_toml
+  gather_facts: no
+  tasks:
+  - name: See if we knew vaulted_host_toml
+    debug: msg="Found vaulted_host from vaulted.inventory.toml"
+
+  - assert:
+      that:
+        - 'hello=="world"'