diff --git a/.linkml-linter.yaml b/.linkml-linter.yaml
new file mode 100644
index 0000000..1dcffad
--- /dev/null
+++ b/.linkml-linter.yaml
@@ -0,0 +1,3 @@
+rules:
+  permissible_values_format:
+    format: '^[a-zA-Z0-9_\-:]+$'
diff --git a/justfile b/justfile
index 209e2f3..44ba479 100644
--- a/justfile
+++ b/justfile
@@ -94,7 +94,7 @@ test: _test-schema _test-python _test-examples
 # Run linting
 [group('model development')]
 lint:
-  uv run linkml-lint {{source_schema_dir}}
+  uv run linkml-lint --config .linkml-linter.yaml {{source_schema_dir}}
 
 # Generate md documentation for the schema
 [group('model development')]