diff --git a/bioinformatics-toolkit.cabal b/bioinformatics-toolkit.cabal
--- a/bioinformatics-toolkit.cabal
+++ b/bioinformatics-toolkit.cabal
@@ -1,5 +1,5 @@
 name:                bioinformatics-toolkit
-version:             0.9.3
+version:             0.9.3.1
 synopsis:            A collection of bioinformatics tools
 description:         A collection of bioinformatics tools
 license:             MIT
diff --git a/src/Bio/RealWorld/GENCODE.hs b/src/Bio/RealWorld/GENCODE.hs
--- a/src/Bio/RealWorld/GENCODE.hs
+++ b/src/Bio/RealWorld/GENCODE.hs
@@ -4,6 +4,7 @@
 module Bio.RealWorld.GENCODE
     ( Gene(..)
     , Transcript(..)
+    , TranscriptType(..)
     , readGenes
     ) where