diff --git a/coreir/__init__.py b/coreir/__init__.py
index 744d843..37824db 100644
--- a/coreir/__init__.py
+++ b/coreir/__init__.py
@@ -60,6 +60,9 @@ def define_types(name,input_types,output_type=None):
 
 libcoreir_c.COREPrintErrors.argtypes = [COREContext_p]
 
+libcoreir_c.COREBitInOut.argtypes = [COREContext_p]
+libcoreir_c.COREBitInOut.restype = COREType_p
+
 libcoreir_c.COREBitIn.argtypes = [COREContext_p]
 libcoreir_c.COREBitIn.restype = COREType_p
 
diff --git a/coreir/context.py b/coreir/context.py
index 9fcf854..bb531bd 100644
--- a/coreir/context.py
+++ b/coreir/context.py
@@ -61,6 +61,9 @@ def G(self):
     def print_errors(self):
         libcoreir_c.COREPrintErrors(self.context)
 
+    def BitInOut(self):
+        return Type(libcoreir_c.COREBitInOut(self.context),self)
+
     def BitIn(self):
         return Type(libcoreir_c.COREBitIn(self.context),self)
 
diff --git a/coreir/type.py b/coreir/type.py
index f778c3b..5c63a41 100644
--- a/coreir/type.py
+++ b/coreir/type.py
@@ -95,7 +95,8 @@ def kind(self):
             1: "BitIn",
             2: "Array",
             3: "Record",
-            4: "Named"
+            4: "Named",
+            5: "BitInOut"
         }[kind]
 
     def is_input(self):