diff --git a/pkgs/development/libraries/freetts/default.nix b/pkgs/development/libraries/freetts/default.nix
index 06535c087dc6..698a7f6a28ac 100644
--- a/pkgs/development/libraries/freetts/default.nix
+++ b/pkgs/development/libraries/freetts/default.nix
@@ -1,29 +1,53 @@
-{stdenv, fetchurl, apacheAnt, unzip, sharutils, lib, jdk}:
+{ lib
+, stdenv
+, fetchzip
+, ant
+, jdk8
+, sharutils
+}:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "freetts";
   version = "1.2.2";
-  src = fetchurl {
-    url = "mirror://sourceforge/freetts/${pname}-${version}-src.zip";
-    sha256 = "0mnikqhpf4f4jdr0irmibr8yy0dnffx1i257y22iamxi7a6by2r7";
+
+  src = fetchzip {
+    url = "mirror://sourceforge/freetts/${finalAttrs.pname}-${finalAttrs.version}-src.zip";
+    hash = "sha256-+bhM0ErEZVnmcz5CBqn/AeGaOhKnCjZzGeqgO/89wms=";
+    stripRoot = false;
   };
-  nativeBuildInputs = [ unzip ];
-  buildInputs = [ apacheAnt sharutils jdk ];
-  unpackPhase = ''
-    unzip $src -x META-INF/*
+
+  nativeBuildInputs = [
+    ant
+    jdk8
+    sharutils
+  ];
+
+  sourceRoot = "${finalAttrs.src.name}/freetts-${finalAttrs.version}";
+
+  postPatch = ''
+    # Fix jar timestamps for reproducibility
+    substituteInPlace build.xml demo.xml \
+        --replace-fail '<jar ' '<jar modificationtime="0" '
   '';
 
   buildPhase = ''
-    cd */lib
+    runHook preBuild
+
+    pushd lib
     sed -i -e "s/more/cat/" jsapi.sh
     echo y | sh jsapi.sh
-    cd ..
+    popd
+
     ln -s . src
     ant
+
+    runHook postBuild
   '';
+
   installPhase = ''
-    install -v -m755 -d $out/{lib,docs/{audio,images}}
-    install -v -m644 lib/*.jar $out/lib
+    runHook preInstall
+    install -Dm644 lib/*.jar -t $out/lib
+    runHook postInstall
   '';
 
   meta = {
@@ -32,8 +56,12 @@ stdenv.mkDerivation rec {
       Text to speech system based on Festival written in Java.
       Can be used in combination with KDE accessibility.
     '';
-    license = "GPL";
     homepage = "http://freetts.sourceforge.net";
-    maintainers = [ lib.maintainers.sander ];
+    license = lib.licenses.bsdOriginal;
+    maintainers = with lib.maintainers; [ sander ];
+    sourceProvenance = with lib.sourceTypes; [
+      fromSource
+      binaryBytecode # jsapi.jar is bundled in a self-extracting shell-script
+    ];
   };
-}
+})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ee4d5333683f..59322317e8ab 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21099,9 +21099,7 @@ with pkgs;
     };
   };
 
-  freetts = callPackage ../development/libraries/freetts {
-    jdk = jdk8; # TODO: remove override https://github.com/NixOS/nixpkgs/pull/89731
-  };
+  freetts = callPackage ../development/libraries/freetts { };
 
   frog = res.languageMachines.frog;