diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,4 @@
+- 0.9.1.3: Work around spurious test failures, see PR #118.
 - 0.9.1.2: Update haddock for `Language.C.Inline.Interruptible.pure`.
 - 0.9.1.1: Use `unsafeDupablePerformIO` rather than `unsafePerformIO`. See issue #115 and PR #117.
 - 0.9.1.0: Add `Language.C.Inline.substitute` and `Language.C.Inline.getHaskellType`.
diff --git a/inline-c.cabal b/inline-c.cabal
--- a/inline-c.cabal
+++ b/inline-c.cabal
@@ -1,5 +1,5 @@
 name:                inline-c
-version:             0.9.1.2
+version:             0.9.1.3
 synopsis:            Write Haskell source files including C code inline. No FFI required.
 description:         See <https://github.com/fpco/inline-c/blob/master/README.md>.
 license:             MIT
diff --git a/test/Language/C/Types/ParseSpec.hs b/test/Language/C/Types/ParseSpec.hs
--- a/test/Language/C/Types/ParseSpec.hs
+++ b/test/Language/C/Types/ParseSpec.hs
@@ -11,6 +11,7 @@
 import           Control.Monad.Trans.Class (lift)
 import           Data.Hashable (Hashable)
 import qualified Test.Hspec as Hspec
+import qualified Test.Hspec.QuickCheck
 import qualified Test.QuickCheck as QC
 import           Text.Parser.Char
 import           Text.Parser.Combinators
@@ -29,7 +30,10 @@
 import Prelude -- Fix for 7.10 unused warnings.
 
 spec :: Hspec.SpecWith ()
-spec = do
+-- modifyMaxDiscardRatio:
+--    'isGoodType' and 'isGoodHaskellIdentifierType' usually make it within the
+--    discard ratio of 10, but we increase the ratio to avoid spurious build failures
+spec = Test.Hspec.QuickCheck.modifyMaxDiscardRatio (const 20) $ do
   Hspec.it "parses everything which is pretty-printable (C)" $ do
 #if MIN_VERSION_QuickCheck(2,9,0)
     QC.property $ QC.again $ do -- Work around <https://github.com/nick8325/quickcheck/issues/113>