diff --git a/Scripts/gen_rdkit_stubs/patch/rdkit/Chem/__init__.pyi.diff b/Scripts/gen_rdkit_stubs/patch/rdkit/Chem/__init__.pyi.diff
new file mode 100644
index 000000000..d53a79e17
--- /dev/null
+++ b/Scripts/gen_rdkit_stubs/patch/rdkit/Chem/__init__.pyi.diff
@@ -0,0 +1,10 @@
+--- a/rdkit/Chem/__init__.pyi
++++ b/rdkit/Chem/__init__.pyi
+@@ -138,7 +138,7 @@
+         ...
+     def _sizeCalc(self):
+         ...
+-def CanonSmiles(smi, useChiral = 1):
++def CanonSmiles(smi: str, useChiral: int = 1) -> str:
+     """
+     A convenience function for canonicalizing SMILES
diff --git a/Scripts/gen_rdkit_stubs/patch/rdkit/Chem/rdchem.pyi.diff b/Scripts/gen_rdkit_stubs/patch/rdkit/Chem/rdchem.pyi.diff
new file mode 100644
index 000000000..100d4fc38
--- /dev/null
+++ b/Scripts/gen_rdkit_stubs/patch/rdkit/Chem/rdchem.pyi.diff
@@ -0,0 +1,20 @@
+--- a/rdkit/Chem/rdchem.pyi
++++ b/rdkit/Chem/rdchem.pyi
+@@ -1988,7 +1988,7 @@
+             C++ signature :
+                 RDKit::Atom* GetAtomWithIdx(RDKit::ROMol {lvalue},unsigned int)
+         """
+-    def GetAtoms(self):
++    def GetAtoms(self) -> typing.Iterable[Atom]:
+         """
+         returns an iterator over the atoms in the molecule
+         """
+@@ -2030,7 +2030,7 @@
+             C++ signature :
+                 RDKit::Bond* GetBondWithIdx(RDKit::ROMol {lvalue},unsigned int)
+         """
+-    def GetBonds(self):
++    def GetBonds(self) -> typing.Iterable[Bond]:
+         """
+         returns an iterator over the bonds in the molecule
+         """