diff --git a/src/tequila/quantumchemistry/qc_base.py b/src/tequila/quantumchemistry/qc_base.py
index 63e578d2..f2da7b28 100644
--- a/src/tequila/quantumchemistry/qc_base.py
+++ b/src/tequila/quantumchemistry/qc_base.py
@@ -559,7 +559,7 @@ def transform_orbitals(self, orbital_coefficients, *args, **kwargs):
         # can not be an instance of a specific backend (otherwise we get inconsistencies with classical methods in the backend)
         integral_manager = copy.deepcopy(self.integral_manager)
         integral_manager.transform_orbitals(U=orbital_coefficients)
-        result = QuantumChemistryBase(parameters=self.parameters, integral_manager=integral_manager)
+        result = QuantumChemistryBase(parameters=self.parameters, integral_manager=integral_manager, transformation=self.transformation)
         return result
     
     def orthonormalize_basis_orbitals(self):
diff --git a/src/tequila/version.py b/src/tequila/version.py
index aa34639c..f4531a81 100644
--- a/src/tequila/version.py
+++ b/src/tequila/version.py
@@ -1,2 +1,2 @@
-__version__ = "1.9.2.dev"
+__version__ = "1.9.3"
 __author__ = "Tequila Developers "