diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 Changes
 =======
 
+Version 0.10.1.1
+----------------
+
+* Accept underscores in `--quickcheck-tests` for readability,
+    e.g. `--quickcheck-tests 10_000_000`.
+
 Version 0.10.1
 --------------
 
diff --git a/Test/Tasty/QuickCheck.hs b/Test/Tasty/QuickCheck.hs
--- a/Test/Tasty/QuickCheck.hs
+++ b/Test/Tasty/QuickCheck.hs
@@ -101,9 +101,12 @@
 
 instance IsOption QuickCheckTests where
   defaultValue = 100
-  parseValue = fmap QuickCheckTests . safeRead
+  parseValue =
+    -- We allow numeric underscores for readability; see
+    -- https://github.com/feuerbach/tasty/issues/263
+    fmap QuickCheckTests . safeRead . filter (/= '_')
   optionName = return "quickcheck-tests"
-  optionHelp = return "Number of test cases for QuickCheck to generate"
+  optionHelp = return "Number of test cases for QuickCheck to generate. Underscores accepted: e.g. 10_000_000"
   optionCLParser = mkOptionCLParser $ metavar "NUMBER"
 
 instance IsOption QuickCheckReplay where
diff --git a/tasty-quickcheck.cabal b/tasty-quickcheck.cabal
--- a/tasty-quickcheck.cabal
+++ b/tasty-quickcheck.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                tasty-quickcheck
-version:             0.10.1
+version:             0.10.1.1
 synopsis:            QuickCheck support for the Tasty test framework.
 description:         QuickCheck support for the Tasty test framework.
 license:             MIT
@@ -26,7 +26,7 @@
   exposed-modules:     Test.Tasty.QuickCheck
   -- other-modules:
   other-extensions:    GeneralizedNewtypeDeriving, DeriveDataTypeable
-  build-depends:       base == 4.*, tagged, tasty >= 1.0.1, random, QuickCheck >= 2.7,
+  build-depends:       base == 4.*, tagged, tasty >= 1.0.1, random, QuickCheck >= 2.10,
                        optparse-applicative
 
   -- hs-source-dirs: