diff --git a/pkgs/development/tools/build-managers/gradle/default.nix b/pkgs/development/tools/build-managers/gradle/default.nix
index a15eb2752317..f6fa53cfab05 100644
--- a/pkgs/development/tools/build-managers/gradle/default.nix
+++ b/pkgs/development/tools/build-managers/gradle/default.nix
@@ -72,38 +72,4 @@ rec {
       sha256 = "0vhqxnk0yj3q9jam5w4kpia70i4h0q4pjxxqwynh3qml0vrcn9l6";
     };
   };
-
-  gradle_3_5 = gradleGen rec {
-    name = "gradle-3.5.1";
-    nativeVersion = "0.14";
-
-    src = fetchurl {
-      url = "http://services.gradle.org/distributions/${name}-bin.zip";
-      sha256 = "1y7fbhrdriclbs5ksxahi0aafsz760lalwyz8r4llysc5pskbkld";
-    };
-  };
-
-  gradle_2_14 = gradleGen rec {
-    name = "gradle-2.14.1";
-    nativeVersion = "0.10";
-
-    src = fetchurl {
-      url = "http://services.gradle.org/distributions/${name}-bin.zip";
-      sha256 = "0fggjxpsnakdaviw7bn2jmsl06997phlqr1251bjmlgjf7d1xing";
-    };
-  };
-
-  # Nix pkgs that depend on this old version:
-  # pkgs/tools/security/jd-gui/default.nix
-  # pkgs/servers/mxisd/default.nix
-  # If these packages are updated, this old version can probably be removed
-  gradle_2_5 = gradleGen rec {
-    name = "gradle-2.5";
-    nativeVersion = "0.10";
-
-    src = fetchurl {
-      url = "http://services.gradle.org/distributions/${name}-bin.zip";
-      sha256 = "0mc5lf6phkncx77r0papzmfvyiqm0y26x50ipvmzkcsbn463x59z";
-    };
-  };
 }
diff --git a/pkgs/servers/mxisd/default.nix b/pkgs/servers/mxisd/default.nix
index 4290d31870cc..c5841d4d1a85 100644
--- a/pkgs/servers/mxisd/default.nix
+++ b/pkgs/servers/mxisd/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, jre, git, gradle_4, perl, makeWrapper }:
+{ stdenv, fetchFromGitHub, jre, git, gradle, perl, makeWrapper }:
 
 let
   name = "mxisd-${version}";
@@ -16,7 +16,7 @@ let
   deps = stdenv.mkDerivation {
     name = "${name}-deps";
     inherit src;
-    nativeBuildInputs = [ gradle_4 perl git ];
+    nativeBuildInputs = [ gradle perl git ];
 
     buildPhase = ''
       export MXISD_BUILD_VERSION=${rev}
@@ -41,7 +41,7 @@ let
 in
 stdenv.mkDerivation {
   inherit name src version;
-  nativeBuildInputs = [ gradle_4 perl makeWrapper ];
+  nativeBuildInputs = [ gradle perl makeWrapper ];
   buildInputs = [ jre ];
 
   patches = [ ./0001-gradle.patch ];
diff --git a/pkgs/tools/security/jd-gui/default.nix b/pkgs/tools/security/jd-gui/default.nix
index 86b88638bd76..af88fd6270f4 100644
--- a/pkgs/tools/security/jd-gui/default.nix
+++ b/pkgs/tools/security/jd-gui/default.nix
@@ -1,27 +1,25 @@
-{ stdenv, fetchFromGitHub, jre, jdk, makeDesktopItem, perl, writeText, runtimeShell }:
+{ stdenv, fetchFromGitHub, jre, jdk, gradle, makeDesktopItem, perl, writeText, runtimeShell }:
 
 let
   pname = "jd-gui";
-  version = "1.6.5";
+  version = "1.6.6";
 
   src = fetchFromGitHub {
     owner = "java-decompiler";
     repo = pname;
     rev = "v${version}";
-    sha256 = "0yn2xcwznig941pw2f3wi8ixz1wprxcn9wl0g2ggdzx51rfwgzzi";
+    sha256 = "010bd3q2m4jy4qz5ahdx86b5f558s068gbjlbpdhq3bhh4yrjy20";
   };
 
   deps = stdenv.mkDerivation {
     name = "${pname}-deps";
     inherit src;
 
-    nativeBuildInputs = [ jdk perl ];
-
-    patchPhase = "patchShebangs gradlew";
+    nativeBuildInputs = [ jdk perl gradle ];
 
     buildPhase = ''
       export GRADLE_USER_HOME=$(mktemp -d);
-      ./gradlew --no-daemon jar
+      gradle --no-daemon jar
     '';
 
     # Mavenize dependency paths
@@ -30,12 +28,11 @@ let
       find $GRADLE_USER_HOME/caches/modules-2 -type f -regex '.*\.\(jar\|pom\)' \
         | perl -pe 's#(.*/([^/]+)/([^/]+)/([^/]+)/[0-9a-f]{30,40}/([^/\s]+))$# ($x = $2) =~ tr|\.|/|; "install -Dm444 $1 \$out/$x/$3/$4/$5" #e' \
         | sh
-      cp -r $GRADLE_USER_HOME/wrapper $out
     '';
 
     outputHashAlgo = "sha256";
     outputHashMode = "recursive";
-    outputHash = "1s4p91iiyikrsgvpzkhw3jm5lsm0jpzp7iw7afdhhl9jm18igs70";
+    outputHash = "1qil12s0daxpxj5xj5dj6s2k89is0kiir2vcafkm3lasc41acmk3";
   };
 
   # Point to our local deps repo
@@ -74,15 +71,11 @@ in stdenv.mkDerivation rec {
   inherit pname version src;
   name = "${pname}-${version}";
 
-  nativeBuildInputs = [ jdk ];
-
-  patchPhase = "patchShebangs gradlew";
+  nativeBuildInputs = [ jdk gradle ];
 
   buildPhase = ''
     export GRADLE_USER_HOME=$(mktemp -d)
-    cp -r ${deps}/wrapper $GRADLE_USER_HOME
-    chmod u+w $GRADLE_USER_HOME/wrapper/dists/gradle*/*/*.lck
-    ./gradlew --offline --no-daemon --info --init-script ${gradleInit} jar
+    gradle --offline --no-daemon --info --init-script ${gradleInit} jar
   '';
 
   installPhase = let
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e7e7be157006..614369dbb7d4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10119,12 +10119,7 @@ in
     java = jdk;
   };
   gradle = res.gradleGen.gradle_latest;
-  gradle_2_5 = res.gradleGen.gradle_2_5;
-  gradle_2_14 = res.gradleGen.gradle_2_14;
-  gradle_3_5 = res.gradleGen.gradle_3_5;
   gradle_4_10 = res.gradleGen.gradle_4_10;
-  gradle_2 = gradle_2_14;
-  gradle_3 = gradle_3_5;
   gradle_4 = gradle_4_10;
   gradle_5 = res.gradleGen.gradle_5_6;