diff --git a/clipkit/api.py b/clipkit/api.py
index d42506e..b877cac 100644
--- a/clipkit/api.py
+++ b/clipkit/api.py
@@ -18,7 +18,8 @@ def clipkit(
     gap_characters=None,
     input_file_format=FileFormat.fasta,
     output_file_format=FileFormat.fasta,
-    sequence_type=SeqType.aa
+    sequence_type=SeqType.aa,
+    codon=bool,
 ) -> TextIO:
     """
     If input_file_path is given with no output_file_path -> Bio MSA (multiple sequence alignment object)
@@ -39,7 +40,6 @@ def clipkit(
 
     # override some options not currently available through programmatic interface
     complement = False
-    codon = False
     use_log = False
     quiet = True
 
diff --git a/clipkit/version.py b/clipkit/version.py
index 4eabd0b..e835b9d 100644
--- a/clipkit/version.py
+++ b/clipkit/version.py
@@ -1 +1 @@
-__version__ = "2.1.2"
+__version__ = "2.1.3"