diff --git a/.github/workflows/fly.yml b/.github/workflows/deploy.yml
similarity index 100%
rename from .github/workflows/fly.yml
rename to .github/workflows/deploy.yml
diff --git a/.github/workflows/validate_materials.yml b/.github/workflows/validate_materials.yml
new file mode 100644
index 0000000..b90ff95
--- /dev/null
+++ b/.github/workflows/validate_materials.yml
@@ -0,0 +1,27 @@
+name: Validate Materials
+
+on:
+  push:
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Run validation script
+        run: |
+          export PYTHONPATH=$(pwd)  # Adiciona o diretório raiz ao PYTHONPATH
+          python curadoria_coletiva/validate_materials.py
diff --git a/curadoria_coletiva/materials/example.yml b/curadoria_coletiva/materials/example.yml
index 43ccedf..e2e66f2 100644
--- a/curadoria_coletiva/materials/example.yml
+++ b/curadoria_coletiva/materials/example.yml
@@ -1,5 +1,4 @@
 - titulo: Introdução ao Python
-  autor: Jane Doe
   url: https://example.com/python-course
   assuntos:
     - python
diff --git a/curadoria_coletiva/validate_materials.py b/curadoria_coletiva/validate_materials.py
index b75eaaa..2c37a07 100644
--- a/curadoria_coletiva/validate_materials.py
+++ b/curadoria_coletiva/validate_materials.py
@@ -1,3 +1,4 @@
+import sys
 import yaml
 from pydantic import ValidationError
 from typing import Set, List, Dict, Any
@@ -19,9 +20,13 @@ def validate_materials_from_yaml(yaml_file: str) -> List[Dict[str, Any]]:
             validated_materials.append(material_data)
             print(f"Valid material found: {material_data.get('titulo')}")
         except ValidationError as e:
-            print(f"Validation error in material {material_data.get('titulo')}: {e}")
+            msg = "Validation error in material {material_data.get('titulo')}: {e}"
+            print(msg)
+            sys.exit(1, msg)
         except ValueError as e:
-            print(f"Value error in material {material_data.get('titulo')}: {e}")
+            msg = f"Value error in material {material_data.get('titulo')}: {e}"
+            print(msg)
+            sys.exit(1, msg)
 
     return validated_materials
 
@@ -69,6 +74,6 @@ def _validate_material(material_data: Dict[str, Any], unique_titles: Set[str]) -
 
 
 if __name__ == "__main__":
-    input_yaml_file = "all_materials.yml"
-    collect_materials("materials", input_yaml_file)
+    input_yaml_file = "curadoria_coletiva/all_materials.yml"
+    collect_materials("curadoria_coletiva/materials", input_yaml_file)
     validate_materials_from_yaml(input_yaml_file)