diff --git a/ghc-check.cabal b/ghc-check.cabal
--- a/ghc-check.cabal
+++ b/ghc-check.cabal
@@ -1,7 +1,7 @@
 cabal-version:       2.4
 
 name:                ghc-check
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            detect mismatches between compile-time and run-time versions of the ghc api
 description:         detect mismatches between compile-time and run-time versions of the ghc api
 bug-reports:         https://github.com/pepeiborra/ghc-check/issues
diff --git a/src/GHC/Check.hs b/src/GHC/Check.hs
--- a/src/GHC/Check.hs
+++ b/src/GHC/Check.hs
@@ -8,9 +8,11 @@
 import Data.Version (Version)
 import GHC.Exts (toList, IsList(fromList))
 
+-- | Returns the compile-time version of the 'ghc' package
 compileTimeVersion :: Version
 compileTimeVersion = fromList $(lift =<< toList <$> runIO getGHCVersionIO)
 
+-- | Returns the run-time version of the 'ghc' package by looking up in the package database
 runTimeVersion :: Ghc (Maybe Version)
 runTimeVersion = getGHCVersion