diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -16,3 +16,7 @@
 * Deep search performance improvement
 * Clean up unnecessary arguments
 * Fixed typos
+
+## 0.1.0.6
+* Default resolver version bump to lts-16.27 (ghc-8.8.4)
+* use docopt 0.7.0.6+ (fixed issue causing compilation error with below ghc-8.8.2)
diff --git a/longshot.cabal b/longshot.cabal
--- a/longshot.cabal
+++ b/longshot.cabal
@@ -1,13 +1,11 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.33.0.
+-- This file has been generated from package.yaml by hpack version 0.34.4.
 --
 -- see: https://github.com/sol/hpack
---
--- hash: c10047924761d0fcff4dbb2e8ff88afe21db7e63864eacee60ac943577718ef3
 
 name:           longshot
-version:        0.1.0.5
+version:        0.1.0.6
 synopsis:       Fast Brute-force search using parallelism
 description:    Longshot enables to search for preimages from a given hash value
                 using a brute-force method based on parallelism.
@@ -49,18 +47,21 @@
       Paths_longshot
   hs-source-dirs:
       src
-  default-extensions: TemplateHaskell KindSignatures DataKinds
+  default-extensions:
+      TemplateHaskell
+      KindSignatures
+      DataKinds
   build-depends:
       base >=4.12.0 && <5
     , base16-bytestring >=0.1.0 && <0.2
     , blake2 >=0.3.0 && <0.4
-    , blake3 >=0.2 && <0.3
+    , blake3 ==0.2.*
     , bytestring >=0.10.8 && <0.11
-    , containers >=0.6 && <0.7
+    , containers ==0.6.*
     , cryptohash-sha256 >=0.11.101 && <0.12
     , cryptonite >=0.25
     , deepseq >=1.4.4 && <1.5
-    , docopt >=0.7.0 && <0.8
+    , docopt >=0.7.0.6
     , memory >=0.14.0 && <0.16
     , parallel >=3.2.2 && <3.3
     , template-haskell >=2.14.0 && <2.17
@@ -72,19 +73,22 @@
       Paths_longshot
   hs-source-dirs:
       app
-  default-extensions: TemplateHaskell KindSignatures DataKinds
+  default-extensions:
+      TemplateHaskell
+      KindSignatures
+      DataKinds
   ghc-options: -threaded -rtsopts -with-rtsopts=-N -dynamic -feager-blackholing -g0 -eventlog
   build-depends:
       base >=4.12.0 && <5
     , base16-bytestring >=0.1.0 && <0.2
     , blake2 >=0.3.0 && <0.4
-    , blake3 >=0.2 && <0.3
+    , blake3 ==0.2.*
     , bytestring >=0.10.8 && <0.11
-    , containers >=0.6 && <0.7
+    , containers ==0.6.*
     , cryptohash-sha256 >=0.11.101 && <0.12
     , cryptonite >=0.25
     , deepseq >=1.4.4 && <1.5
-    , docopt >=0.7.0 && <0.8
+    , docopt >=0.7.0.6
     , longshot
     , memory >=0.14.0 && <0.16
     , parallel >=3.2.2 && <3.3
@@ -98,19 +102,22 @@
       Paths_longshot
   hs-source-dirs:
       test
-  default-extensions: TemplateHaskell KindSignatures DataKinds
+  default-extensions:
+      TemplateHaskell
+      KindSignatures
+      DataKinds
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
   build-depends:
       base >=4.12.0 && <5
     , base16-bytestring >=0.1.0 && <0.2
     , blake2 >=0.3.0 && <0.4
-    , blake3 >=0.2 && <0.3
+    , blake3 ==0.2.*
     , bytestring >=0.10.8 && <0.11
-    , containers >=0.6 && <0.7
+    , containers ==0.6.*
     , cryptohash-sha256 >=0.11.101 && <0.12
     , cryptonite >=0.25
     , deepseq >=1.4.4 && <1.5
-    , docopt >=0.7.0 && <0.8
+    , docopt >=0.7.0.6
     , longshot
     , memory >=0.14.0 && <0.16
     , parallel >=3.2.2 && <3.3
diff --git a/src/Crypto/Longshot/Internal.hs b/src/Crypto/Longshot/Internal.hs
--- a/src/Crypto/Longshot/Internal.hs
+++ b/src/Crypto/Longshot/Internal.hs
@@ -42,23 +42,23 @@
 -- | Brute-force search only for a given exact length
 --
 -- @
--- ------------------------------------------------------------------------------
---     size | Preimage length to search
--- ------------------------------------------------------------------------------
---    chars | Given character set like "0123456789"
--- ------------------------------------------------------------------------------
---      hex | Given hex-string like "17da1ae431f965d839ec8eb93087fb2b"
--- ------------------------------------------------------------------------------
---   hasher | Hash functions in 'Hasher' module. Get it using 'getHasher'
--- ------------------------------------------------------------------------------
---  numBind | Number of bound variables defined by search length and prefix size
--- ------------------------------------------------------------------------------
---   runPar | A partially applied function for parallel execution
--- ------------------------------------------------------------------------------
--- prefixes | All possible combinations of given prefix characters.
---          | The search space is equally partitioned based on these prefixes.
---          | length of prefixes == number of sparks
--- ------------------------------------------------------------------------------
+-- +----------+----------------------------------------------------------------------+
+-- |     size | Preimage length to search                                            |
+-- +----------+----------------------------------------------------------------------+
+-- |    chars | Given character set like "0123456789"                                |
+-- +----------+----------------------------------------------------------------------+
+-- |      hex | Given hex-string like "17da1ae431f965d839ec8eb93087fb2b"             |
+-- +----------+----------------------------------------------------------------------+
+-- |   hasher | Hash functions in 'Hasher' module. Get it using 'getHasher'          |
+-- +----------+----------------------------------------------------------------------+
+-- |  numBind | Number of bound variables defined by search length and prefix size   |
+-- +----------+----------------------------------------------------------------------+
+-- |   runPar | A partially applied function for parallel execution                  |
+-- +----------+----------------------------------------------------------------------+
+-- | prefixes | All possible combinations of given prefix characters.                |
+-- |          | The search space is equally partitioned based on these prefixes.     |
+-- |          | length of prefixes == number of sparks                               |
+-- +----------+----------------------------------------------------------------------+
 -- @
 --
 bruteforce :: Int -> String -> String -> Hasher -> Maybe String
@@ -81,7 +81,7 @@
   | numBind `elem` [0 .. maxNumBind] = $( funcList ) !! numBind
   | otherwise = errorWithoutStackTrace "Not available search length"
 
--- | Deep Brute-force search including less than a given search size
+-- | Incrementally searches without knowing the exact length of search
 --
 -- See the 'bruteforce' function for the arguments used
 --