diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+1.20.1
+
+* BUG FIX: Fix binary encoding to use correct standard version
+    * This fixes computed hashes to correctly match standard version 5.0.0
+    * This is not marked as a breaking change since it is a bug fix.  The
+      1.20.0 release will be blacklisted on Hackage and users should upgrade
+      from 1.19.* directly to 1.20.1
+    * See: https://github.com/dhall-lang/dhall-haskell/pull/771
+
 1.20.0
 
 * Supports version 5.0.0 of the language standard
diff --git a/Prelude/Monoid b/Prelude/Monoid
--- a/Prelude/Monoid
+++ b/Prelude/Monoid
@@ -1,1 +1,1 @@
-https://raw.githubusercontent.com/dhall-lang/Prelude/a22da69657b9316a3c51ba0bf80c9d4024db3fce/Monoid sha256:c4ff4f04ce9d3b7b579ff2ac7fe00258d665c701f895493b73082b750b28553d
+https://raw.githubusercontent.com/dhall-lang/Prelude/a22da69657b9316a3c51ba0bf80c9d4024db3fce/Monoid sha256:b306524b2f7fedd7dad0d328990e0b6271d93d6f2fbe7156474b757f5d8de187
diff --git a/Prelude/package.dhall b/Prelude/package.dhall
--- a/Prelude/package.dhall
+++ b/Prelude/package.dhall
@@ -1,1 +1,1 @@
-https://raw.githubusercontent.com/dhall-lang/Prelude/e9c90396c02f9eb0fe66c00c544615cbfa068f34/package.dhall sha256:534e4a9e687ba74bfac71b30fc27aa269c0465087ef79bf483e876781602a454
+https://raw.githubusercontent.com/dhall-lang/Prelude/e9c90396c02f9eb0fe66c00c544615cbfa068f34/package.dhall sha256:26e13b153cb428366610110d4d8f0c135e22b20179d5478bb16b1b83b3f2ca13
diff --git a/dhall.cabal b/dhall.cabal
--- a/dhall.cabal
+++ b/dhall.cabal
@@ -1,5 +1,5 @@
 Name: dhall
-Version: 1.20.0
+Version: 1.20.1
 Cabal-Version: >=1.10
 Build-Type: Simple
 Tested-With: GHC == 8.0.1
diff --git a/src/Dhall/Binary.hs b/src/Dhall/Binary.hs
--- a/src/Dhall/Binary.hs
+++ b/src/Dhall/Binary.hs
@@ -62,11 +62,11 @@
 
 -- | Supported version strings
 data StandardVersion
-    = V_4_0_0
-    -- ^ Version "4.0.0"
+    = V_5_0_0
+    -- ^ Version "5.0.0"
 
 defaultStandardVersion :: StandardVersion
-defaultStandardVersion = V_4_0_0
+defaultStandardVersion = V_5_0_0
 
 parseStandardVersion :: Parser StandardVersion
 parseStandardVersion =
@@ -80,7 +80,7 @@
     readVersion = do
         string <- Options.Applicative.str
         case string :: Text of
-            "4.0.0" -> return V_4_0_0
+            "5.0.0" -> return V_5_0_0
             _       -> fail "Unsupported version"
 
 {-| Convert a function applied to multiple arguments to the base function and
@@ -827,7 +827,7 @@
             fail ("Cannot decode the version from this decoded CBOR expression: " <> show term)
 
     case version of
-        "4.0.0" -> do
+        "5.0.0" -> do
             return ()
         _ -> do
             fail ("This decoded version is not supported: " <> Data.Text.unpack version)
@@ -840,8 +840,8 @@
 
 -- | Encode a Dhall expression using the specified `Version`
 encodeWithVersion :: StandardVersion -> Expr s Import -> Term
-encodeWithVersion V_4_0_0 expression =
-    TList [ TString "4.0.0", encode expression ]
+encodeWithVersion V_5_0_0 expression =
+    TList [ TString "5.0.0", encode expression ]
 
 data DecodingFailure
     = CannotDecodeVersionString Term
diff --git a/tests/import/success/fieldOrderA.dhall b/tests/import/success/fieldOrderA.dhall
--- a/tests/import/success/fieldOrderA.dhall
+++ b/tests/import/success/fieldOrderA.dhall
@@ -1,5 +1,5 @@
 { example0 =
-    ../data/fieldOrder/1.dhall sha256:4a7866b88389e18cf481b525544fd7903325252faf3a86c8fdc981298c788a9b
+    ../data/fieldOrder/1.dhall sha256:261b3aca810973f81175d19b16226aaa5e76df7ea51c5d45e890dd6cdc49abbd
 , example1 =
-    ../data/fieldOrder/2.dhall sha256:4a7866b88389e18cf481b525544fd7903325252faf3a86c8fdc981298c788a9b
+    ../data/fieldOrder/2.dhall sha256:261b3aca810973f81175d19b16226aaa5e76df7ea51c5d45e890dd6cdc49abbd
 }
diff --git a/tests/import/success/issue553B.dhall b/tests/import/success/issue553B.dhall
--- a/tests/import/success/issue553B.dhall
+++ b/tests/import/success/issue553B.dhall
@@ -1,1 +1,1 @@
-./issue553A.dhall sha256:e2d014696fb7d773727ae5aa42dc20bbd2447ea82bcb5971ccbb7763906edace
+./issue553A.dhall sha256:250873549ddd262f27f3b197b2a2631fb569e7bdfe12446fc0912b4a2359a83e