diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+0.1.1.1
+-------
+* Support `config-value-0.7`
+
 0.1.1.0
 -------
 * Support `config-value-0.6`
diff --git a/config-value-getopt.cabal b/config-value-getopt.cabal
--- a/config-value-getopt.cabal
+++ b/config-value-getopt.cabal
@@ -1,5 +1,5 @@
 name:                config-value-getopt
-version:             0.1.1.0
+version:             0.1.1.1
 synopsis:            Interface between config-value and System.GetOpt
 description:         This package allows to set command line configuration
                      options from a file using the config-value syntax.
@@ -25,8 +25,8 @@
 
 library
   exposed-modules:     Config.GetOpt
-  build-depends:       base >=4.8 && <4.11,
+  build-depends:       base >=4.8 && <4.14,
                        text >=1.2.1.3 && <1.3,
-                       config-value >=0.6 && <0.7
+                       config-value >=0.7 && <0.8
   hs-source-dirs:      src
   default-language:    Haskell2010
diff --git a/src/Config/GetOpt.hs b/src/Config/GetOpt.hs
--- a/src/Config/GetOpt.hs
+++ b/src/Config/GetOpt.hs
@@ -3,6 +3,7 @@
 module Config.GetOpt (configValueGetOpt) where
 
 import Config
+import Config.Number
 
 import Data.Either (partitionEithers)
 import Data.Foldable (find)
@@ -55,10 +56,13 @@
     Just x -> Right (f x)
     Nothing -> Left (k ++ ": invalid parameter")
 
-valueString                :: Value p -> Maybe String
-valueString (Text _ t)      = Just (Text.unpack t)
-valueString (Number _ 10 n) = Just (show n)
-valueString _               = Nothing
+valueString :: Value p -> Maybe String
+valueString (Number _ n)
+  | Radix10 0 <- numberRadix n
+  , Just i    <- numberToInteger n
+  = Just (show i)
+valueString (Text _ t) = Just (Text.unpack t)
+valueString _            = Nothing
 
 lookupOption :: String -> [OptDescr a] -> Maybe (OptDescr a)
 lookupOption name = find $ \o -> name `elem` optionLongNames o