diff --git a/bi_view_editor/__manifest__.py b/bi_view_editor/__manifest__.py
index 29986ed96..63653277e 100644
--- a/bi_view_editor/__manifest__.py
+++ b/bi_view_editor/__manifest__.py
@@ -23,6 +23,10 @@
     'qweb': [
         'static/src/xml/bi_view_editor.xml'
     ],
+    'external_dependencies': {
+        'python': ['pydot'],
+        'deb': ['graphviz']
+    },
     'post_load': 'post_load',
     'uninstall_hook': 'uninstall_hook',
     'installable': True,
diff --git a/bi_view_editor/models/bve_view.py b/bi_view_editor/models/bve_view.py
index 58ac76a89..c377acad9 100644
--- a/bi_view_editor/models/bve_view.py
+++ b/bi_view_editor/models/bve_view.py
@@ -171,7 +171,7 @@ class BveView(models.Model):
             try:
                 png_base64_image = base64.b64encode(graph.create_png())
                 bve_view.er_diagram_image = png_base64_image
-            except:
+            except Exception:
                 bve_view.er_diagram_image = False
 
     def _create_view_arch(self):
diff --git a/requirements.txt b/requirements.txt
index f71555a18..04bfa1fdc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@
 altair
 py3o.formats
 py3o.template
+pydot
 PyPDF2
 xlrd
 xlsxwriter