diff --git a/CHANGELOG.md b/CHANGELOG.md
index beb91f426..ae145096e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Dependencies: Update codecov/codecov-action from 3 to 5 ([@dirksammel](https://github.com/dirksammel))
 - Dependencies: Update crate-ci/typos from 1.26.8 to 1.28.4 ([@dirksammel](https://github.com/dirksammel))
 - Dependencies: Update cryptography from 43.0.3 to 44.0.0 ([@dirksammel](https://github.com/dirksammel))
+- Dependencies: Update mypy from 1.13.0 to 1.14.1 ([@dirksammel](https://github.com/dirksammel))
 - Dependencies: Update pydantic from 2.9.2 to 2.10.4 ([@dirksammel](https://github.com/dirksammel))
 - Dependencies: Update pyo3 from 0.20.3 to 0.22.5 ([@dirksammel](https://github.com/dirksammel))
 - Dependencies: Update pytest from 8.3.3 to 8.3.4 ([@dirksammel](https://github.com/dirksammel))
diff --git a/plugins/apel/pyproject.toml b/plugins/apel/pyproject.toml
index 1f92e2fad..4bea53b3d 100644
--- a/plugins/apel/pyproject.toml
+++ b/plugins/apel/pyproject.toml
@@ -24,7 +24,7 @@ style = [
 tests = [
       "pytest==8.3.4",
       "pytest-cov==6.0.0",
-      "mypy==1.13.0",	
+      "mypy==1.14.1",	
       "types-pyyaml==6.0.12.20240917",
       "types-requests==2.32.0.20241016",
 ]
diff --git a/plugins/apel/src/auditor_apel_plugin/config.py b/plugins/apel/src/auditor_apel_plugin/config.py
index 6b646bbf4..d2e47e4d0 100644
--- a/plugins/apel/src/auditor_apel_plugin/config.py
+++ b/plugins/apel/src/auditor_apel_plugin/config.py
@@ -27,7 +27,10 @@ class MessageType(Enum):
 class Configurable(BaseModel):
     @classmethod
     def from_yaml(cls, loader: yaml.SafeLoader, node: yaml.nodes.MappingNode):
-        return cls(**loader.construct_mapping(node, deep=True))
+        mapping = loader.construct_mapping(node, deep=True)
+        string_mapping = {str(k): v for k, v in mapping.items()}
+
+        return cls(**string_mapping)
 
 
 class Function(Configurable):