diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+Version 0.3.9 (2020-06-10)
+--------------------------
+
+- Allow dependency on `optparse-applicative` 0.15.
+
 Version 0.3.8 (2017-11-18)
 --------------------------
 
diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -2,7 +2,6 @@
 import           Control.Monad
 import           Data.Binary
 import           Data.Bits
-import           Data.Monoid
 import           Data.String
 import           Data.Version
 import           Network.HTTP
diff --git a/flaccuraterip.cabal b/flaccuraterip.cabal
--- a/flaccuraterip.cabal
+++ b/flaccuraterip.cabal
@@ -1,5 +1,5 @@
 Name:           flaccuraterip
-Version:        0.3.8
+Version:        0.3.9
 Cabal-Version:  >= 1.10
 Build-Type:     Simple
 License:        GPL-3
@@ -40,7 +40,7 @@
 Source-Repository this
   Type:      git
   Location:  git://github.com/tensor5/flAccurateRip.git
-  Tag:       v0.3.8
+  Tag:       v0.3.9
 
 Executable flaccuraterip
   Default-Language:  Haskell2010
@@ -48,7 +48,7 @@
                      binary                >= 0.5 && < 0.9,
                      deepseq               >= 1.3 && < 1.5,
                      HTTP                  >= 4000.2 && < 4000.4,
-                     optparse-applicative  >= 0.10 && < 0.15,
+                     optparse-applicative  >= 0.10 && < 0.16,
                      process               >= 1.5 && < 1.7
   GHC-Options:       -Wall
   Main-Is:           Main.hs