diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 071c42c4..b59819b6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -87,7 +87,7 @@ repos:
           - subprocess-tee>=0.4.1
           - "typing-extensions>=4.5.0;python_version<'3.10'"
           - types-PyYAML
-          - types-pkg_resources
+          - types-setuptools
           - types-jsonschema>=4.4.9
   - repo: https://github.com/pycqa/pylint
     rev: v3.2.4
diff --git a/src/ansible_compat/schema.py b/src/ansible_compat/schema.py
index fb411f73..c1dd33cc 100644
--- a/src/ansible_compat/schema.py
+++ b/src/ansible_compat/schema.py
@@ -102,8 +102,8 @@ def validate(
                 data_path=to_path(validation_error.absolute_path),
                 json_path=json_path(validation_error.absolute_path),
                 schema_path=to_path(validation_error.schema_path),
-                relative_schema=validation_error.schema,
-                expected=validation_error.validator_value,
+                relative_schema=str(validation_error.schema),
+                expected=str(validation_error.validator_value),
                 validator=str(validation_error.validator),
                 found=str(validation_error.instance),
             )
diff --git a/test/assets/validate0_expected.json b/test/assets/validate0_expected.json
index ea36da99..50bc4fd1 100644
--- a/test/assets/validate0_expected.json
+++ b/test/assets/validate0_expected.json
@@ -4,7 +4,7 @@
     "data_path": "environment.a",
     "json_path": "$.environment.a",
     "schema_path": "properties.environment.additionalProperties.type",
-    "relative_schema": { "type": "string" },
+    "relative_schema": "{'type': 'string'}",
     "expected": "string",
     "validator": "type",
     "found": "False"
@@ -14,7 +14,7 @@
     "data_path": "environment.b",
     "json_path": "$.environment.b",
     "schema_path": "properties.environment.additionalProperties.type",
-    "relative_schema": { "type": "string" },
+    "relative_schema": "{'type': 'string'}",
     "expected": "string",
     "validator": "type",
     "found": "True"