diff --git a/src/kyber_py/kyber/__init__.py b/src/kyber_py/kyber/__init__.py
index ab15900..5c72cbe 100644
--- a/src/kyber_py/kyber/__init__.py
+++ b/src/kyber_py/kyber/__init__.py
@@ -1,3 +1,3 @@
 from .default_parameters import Kyber512, Kyber768, Kyber1024
 
-__all__ = [Kyber512, Kyber768, Kyber1024]
+__all__ = ["Kyber512", "Kyber768", "Kyber1024"]
diff --git a/src/kyber_py/ml_kem/__init__.py b/src/kyber_py/ml_kem/__init__.py
index 7d05898..4af5c87 100644
--- a/src/kyber_py/ml_kem/__init__.py
+++ b/src/kyber_py/ml_kem/__init__.py
@@ -1,3 +1,3 @@
 from .default_parameters import ML_KEM_512, ML_KEM_768, ML_KEM_1024
 
-__all__ = [ML_KEM_512, ML_KEM_768, ML_KEM_1024]
+__all__ = ["ML_KEM_512", "ML_KEM_768", "ML_KEM_1024"]