diff --git a/sapl/crispy_layout_mixin.py b/sapl/crispy_layout_mixin.py
index 9c23c8154..8e6a61806 100644
--- a/sapl/crispy_layout_mixin.py
+++ b/sapl/crispy_layout_mixin.py
@@ -337,7 +337,7 @@ def read_yaml_from_file(yaml_layout):
     if isinstance(rendered, SafeText):
         rendered = rendered.strip()
 
-    return yaml.load(rendered)
+    return yaml.load(rendered, yaml.Loader)
 
 
 def read_layout_from_yaml(yaml_layout, key):
diff --git a/sapl/legacy/migracao_dados.py b/sapl/legacy/migracao_dados.py
index 1def7f9c3..46e1fa7cf 100644
--- a/sapl/legacy/migracao_dados.py
+++ b/sapl/legacy/migracao_dados.py
@@ -110,7 +110,9 @@ def get_renames():
     includes = {}
     for app in appconfs:
         app_rename_data = yaml.load(
-            pkg_resources.resource_string(app.module.__name__, 'legacy.yaml'))
+            pkg_resources.resource_string(app.module.__name__, 'legacy.yaml'),
+            yaml.Loader
+        )
         for model_name, renames in app_rename_data.items():
             # armazena ou substitui includes
             if MODEL_RENAME_INCLUDE_PATTERN.match(model_name):
@@ -1175,7 +1177,7 @@ def get_arquivo_resolve_registro_votacao():
 def get_como_resolver_registro_votacao_ambiguo():
     path = get_arquivo_resolve_registro_votacao()
     if path.exists():
-        return yaml.load(path.read_file())
+        return yaml.load(path.read_file(), yaml.Loader)
     else:
         return {}
 
diff --git a/sapl/legacy/migracao_usuarios.py b/sapl/legacy/migracao_usuarios.py
index d767343a3..6fa9cc7ea 100644
--- a/sapl/legacy/migracao_usuarios.py
+++ b/sapl/legacy/migracao_usuarios.py
@@ -71,7 +71,7 @@ def migrar_usuarios(dir_repo):
 
     ARQUIVO_USUARIOS = Path(dir_repo).child('usuarios.yaml')
     with open(ARQUIVO_USUARIOS, 'r') as f:
-        usuarios = yaml.load(f)
+        usuarios = yaml.load(f, yaml.Loader)
     # conferimos de que só há um nome de usuário
     assert all(nome == dados['name'] for nome, dados in usuarios.items())
     usuarios = [
diff --git a/sapl/legacy/scripts/exporta_zope/exporta_zope.py b/sapl/legacy/scripts/exporta_zope/exporta_zope.py
index bec8595cf..36c570faa 100755
--- a/sapl/legacy/scripts/exporta_zope/exporta_zope.py
+++ b/sapl/legacy/scripts/exporta_zope/exporta_zope.py
@@ -471,7 +471,9 @@ def dump_sapl(sigla):
         finalizado = False
         arq_mtimes = Path(repo.working_dir, 'mtimes.yaml')
         mtimes = yaml.load(
-            arq_mtimes.read_file()) if arq_mtimes.exists() else {}
+            arq_mtimes.read_file(),
+            yaml.Loader
+        ) if arq_mtimes.exists() else {}
         _dump_sapl(data_fs_path, documentos_fs_path, destino, salvar, mtimes)
         finalizado = True
     finally:
diff --git a/sapl/legacy/scripts/ressuscita_dependencias.py b/sapl/legacy/scripts/ressuscita_dependencias.py
index 5e12efc01..e45143567 100644
--- a/sapl/legacy/scripts/ressuscita_dependencias.py
+++ b/sapl/legacy/scripts/ressuscita_dependencias.py
@@ -197,7 +197,9 @@ Para facilitar sua conferência, seguem os links para as proposições envolvida
 
 def get_dependencias_a_ressuscitar(slug):
     ocorrencias = yaml.load(
-        Path(DIR_REPO.child('ocorrencias.yaml').read_file()))
+        Path(DIR_REPO.child('ocorrencias.yaml').read_file()),
+        yaml.Loader
+    )
     fks_faltando = ocorrencias.get('fk')
     if not fks_faltando:
         return [], [], []
@@ -412,7 +414,7 @@ def get_ressuscitar(slug):
 def get_slug():
     arq = DIR_DADOS_MIGRACAO.child('siglas_para_slugs.yaml')
     with open(arq, 'r') as arq:
-        siglas_para_slugs = yaml.load(arq)
+        siglas_para_slugs = yaml.load(arq, yaml.Loader)
     sigla = NOME_BANCO_LEGADO[-3:]
     return siglas_para_slugs[sigla]
 
diff --git a/sapl/legacy_migration_settings.py b/sapl/legacy_migration_settings.py
index ce0029937..463fbb7a6 100644
--- a/sapl/legacy_migration_settings.py
+++ b/sapl/legacy_migration_settings.py
@@ -54,7 +54,7 @@ match = re.match('sapl_cm_(.*)', NOME_BANCO_LEGADO)
 SIGLA_CASA = match.group(1)
 _PATH_TABELA_TIMEZONES = DIR_DADOS_MIGRACAO.child('tabela_timezones.yaml')
 with open(_PATH_TABELA_TIMEZONES, 'r') as arq:
-    tabela_timezones = yaml.load(arq)
+    tabela_timezones = yaml.load(arq, yaml.Loader)
 municipio, uf, nome_timezone = tabela_timezones[SIGLA_CASA]
 if nome_timezone:
     PYTZ_TIMEZONE = pytz.timezone(nome_timezone)
diff --git a/sapl/test_crispy_layout_mixin.py b/sapl/test_crispy_layout_mixin.py
index 7ffca2306..a643d5083 100644
--- a/sapl/test_crispy_layout_mixin.py
+++ b/sapl/test_crispy_layout_mixin.py
@@ -18,7 +18,7 @@ ModelName:
   - highlander '''
 
     with mock.patch('sapl.crispy_layout_mixin.read_yaml_from_file') as ryff:
-        ryff.return_value = yaml.load(stub_content)
+        ryff.return_value = yaml.load(stub_content, yaml.Loader)
         assert read_layout_from_yaml('....', 'ModelName') == [
             ['Cool Legend',
              [('name', 9),  ('place', 2), ('tiny', 1)],