diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,13 @@
 # Revision history for greskell
 
+## 0.2.0.1  -- 2018-06-24
+
+* .cabal: Now `hint-test` flag has `manual: True` setting. The
+  hint-test may be sometimes unstable, so the user should be able to
+  disable it in a stable way.
+  See https://github.com/commercialhaskell/stackage/pull/3758
+
+
 ## 0.2.0.0  -- 2018-06-21
 
 * Confirmed test with `aeson-1.4.0.0` and `hint-0.8.0`.
diff --git a/greskell.cabal b/greskell.cabal
--- a/greskell.cabal
+++ b/greskell.cabal
@@ -1,5 +1,5 @@
 name:                   greskell
-version:                0.2.0.0
+version:                0.2.0.1
 author:                 Toshio Ito <debug.ito@gmail.com>
 maintainer:             Toshio Ito <debug.ito@gmail.com>
 license:                BSD3
@@ -71,8 +71,11 @@
 
 
 flag hint-test
-  description: Do tests that use Haskell interpreter
+  description: Do tests that use Haskell interpreter (hint package).
+               These tests depend on the behavior of the hint package, so it may be unstable.
+               Disable the flag to skip the tests.
   default: True
+  manual: True
 
 test-suite hint-test-suite
   if !flag(hint-test)