diff --git a/dhall-bash-simple.nix b/dhall-bash-simple.nix
index aab63fe..316693b 100644
--- a/dhall-bash-simple.nix
+++ b/dhall-bash-simple.nix
@@ -2,12 +2,11 @@
 
 pkgs.stdenv.mkDerivation rec {
   name = "dhall-bash-simple";
-  version = "1.0.17";
-  dhall-version = "1.19.1";
+  version = "1.20.1";
 
   src = pkgs.fetchurl {
-    url = "https://github.com/dhall-lang/dhall-haskell/releases/download/${dhall-version}/dhall-bash-${version}-x86_64-linux.tar.bz2";
-    sha256 = "1y3rglsdmcbiarwfp907hxdd8swvdsh2874m9m4622ws4avz4v95";
+    url = "https://github.com/dhall-lang/dhall-haskell/releases/download/${version}/dhall-bash-${version}-x86_64-linux.tar.bz2";
+    sha256 = "0vm45pj4iffrdrmf71cfgpim4gdx29r4ddawkhspirjg4hy28m2j";
   };
 
   installPhase = ''
diff --git a/dhall-json-simple.nix b/dhall-json-simple.nix
index 01b60f7..492568c 100644
--- a/dhall-json-simple.nix
+++ b/dhall-json-simple.nix
@@ -2,12 +2,11 @@
 
 pkgs.stdenv.mkDerivation rec {
   name = "dhall-json-simple";
-  version = "1.2.5";
-  dhall-version = "1.19.1";
+  version = "1.20.1";
 
   src = pkgs.fetchurl {
-    url = "https://github.com/dhall-lang/dhall-haskell/releases/download/${dhall-version}/dhall-json-${version}-x86_64-linux.tar.bz2";
-    sha256 = "0h896bs7r8bxxagzfivxiyk2h4aym7lw7sk7yc4kxh0fr5dzk03g";
+    url = "https://github.com/dhall-lang/dhall-haskell/releases/download/${version}/dhall-json-${version}-x86_64-linux.tar.bz2";
+    sha256 = "07c1rf5igzndpnlfcil0f9s5ry6l04h256phkx697wk96yw16g2b";
   };
 
   installPhase = ''
diff --git a/dhall-simple.nix b/dhall-simple.nix
index b693377..f86b12b 100644
--- a/dhall-simple.nix
+++ b/dhall-simple.nix
@@ -2,11 +2,11 @@
 
 pkgs.stdenv.mkDerivation rec {
   name = "dhall-simple";
-  version = "1.19.1";
+  version = "1.20.1";
 
   src = pkgs.fetchurl {
     url = "https://github.com/dhall-lang/dhall-haskell/releases/download/${version}/dhall-${version}-x86_64-linux.tar.bz2";
-    sha256 = "088qi8dsxwzyry8ws797kljpyyn18v6hfckvlw18q5bxkvxk0c83";
+    sha256 = "1ycb0pglwi9k1pn4qqjyvd4bi54000fb9aqxnn550a515rm6cb03";
   };
 
   installPhase = ''
diff --git a/dhall-text-simple.nix b/dhall-text-simple.nix
index 33c451e..943ab29 100644
--- a/dhall-text-simple.nix
+++ b/dhall-text-simple.nix
@@ -2,12 +2,11 @@
 
 pkgs.stdenv.mkDerivation rec {
   name = "dhall-text-simple";
-  version = "1.0.14";
-  dhall-version = "1.19.1";
+  version = "1.20.1";
 
   src = pkgs.fetchurl {
-    url = "https://github.com/dhall-lang/dhall-haskell/releases/download/${dhall-version}/dhall-text-${version}-x86_64-linux.tar.bz2";
-    sha256 = "1z3rxl9fmm9lqg8mlis36aybmvg3dhdz9pbgs1vs4dxk33ig6qmj";
+    url = "https://github.com/dhall-lang/dhall-haskell/releases/download/${version}/dhall-text-${version}-x86_64-linux.tar.bz2";
+    sha256 = "1jly3v6sd2bymfa51c57kq6vzkvz1hr69gvlwpjpqimxvkk09hs8";
   };
 
   installPhase = ''