diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index c66180c9329f..f3c6fe29eb87 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -20498,6 +20498,11 @@
     githubId = 943430;
     name = "David Hagege";
   };
+  pdg137 = {
+    name = "Paul Grayson";
+    github = "pdg137";
+    githubId = 466760;
+  };
   peat-psuwit = {
     name = "Ratchanan Srirattanamet";
     email = "peat@peat-network.xyz";
diff --git a/pkgs/applications/radio/js8call/default.nix b/pkgs/applications/radio/js8call/default.nix
deleted file mode 100644
index fc7fa9564e32..000000000000
--- a/pkgs/applications/radio/js8call/default.nix
+++ /dev/null
@@ -1,63 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  pkg-config,
-  hamlib_4,
-  libusb1,
-  cmake,
-  fftw,
-  fftwFloat,
-  qt6,
-  boost,
-}:
-
-stdenv.mkDerivation (finalAttrs: {
-  pname = "js8call";
-  version = "2.3.1";
-
-  src = fetchFromGitHub {
-    owner = "js8call";
-    repo = "js8call";
-    rev = "v${finalAttrs.version}";
-    sha256 = "sha256-rYXjcmQRRfizJVriZo9yX8x2yYfWpL94Cprx9eFC3ss=";
-  };
-
-  nativeBuildInputs = [
-    qt6.wrapQtAppsHook
-    pkg-config
-    cmake
-  ];
-
-  buildInputs = [
-    hamlib_4
-    libusb1
-    fftw
-    fftwFloat
-    qt6.qtbase
-    qt6.qtmultimedia
-    qt6.qtserialport
-    boost
-  ];
-
-  prePatch = ''
-    substituteInPlace CMakeLists.txt \
-        --replace "/usr/share/applications" "$out/share/applications" \
-        --replace "/usr/share/pixmaps" "$out/share/icons/hicolor/128x128/apps" \
-        --replace "/usr/bin/" "$out/bin"
-  '';
-
-  meta = {
-    description = "Weak-signal keyboard messaging for amateur radio";
-    longDescription = ''
-      JS8Call is software using the JS8 Digital Mode providing weak signal
-      keyboard to keyboard messaging to Amateur Radio Operators.
-    '';
-    homepage = "http://js8call.com/";
-    license = lib.licenses.gpl3Plus;
-    platforms = lib.platforms.linux;
-    maintainers = with lib.maintainers; [
-      sarcasticadmin
-    ];
-  };
-})
diff --git a/pkgs/by-name/js/js8call/package.nix b/pkgs/by-name/js/js8call/package.nix
new file mode 100644
index 000000000000..3b547b54b4e7
--- /dev/null
+++ b/pkgs/by-name/js/js8call/package.nix
@@ -0,0 +1,82 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  pkg-config,
+  hamlib_4,
+  libusb1,
+  cmake,
+  fftw,
+  fftwFloat,
+  qt6,
+  boost,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "js8call";
+  version = "2.5.2";
+
+  src = fetchFromGitHub {
+    owner = "JS8Call-improved";
+    repo = "JS8Call-improved";
+    tag = "release/${finalAttrs.version}";
+    hash = "sha256-dpPh3+s29ksdVGc1I5JOJrqzS51Bda8afgU5RrO6B3w=";
+  };
+
+  nativeBuildInputs = [
+    qt6.wrapQtAppsHook
+    pkg-config
+    cmake
+  ];
+
+  buildInputs = [
+    hamlib_4
+    libusb1
+    fftw
+    fftwFloat
+    qt6.qtbase
+    qt6.qtmultimedia
+    qt6.qtserialport
+    boost
+  ];
+
+  # The "install" target is apparently no longer supported so we have
+  # to copy the built assets explicitly.
+  # https://github.com/JS8Call-improved/JS8Call-improved/issues/115
+  installPhase = ''
+    mkdir -p $out/bin $out/share/doc/js8call $out/share/icons/hicolor/128x128/apps $out/share/applications
+    cp JS8Call $out/bin/js8call
+    cp ../LICENSE ../README.md $out/share/doc/js8call
+    cp ../artwork/js8call_icon.png $out/share/icons/hicolor/128x128/apps
+    cp ../JS8Call.desktop $out/share/applications
+    runHook postInstall
+  '';
+
+  # We renamed the executable to lowercase for consistency with older
+  # versions and Linux more generally. Fix up the desktop file here:
+  postInstall = ''
+    substituteInPlace $out/share/applications/JS8Call.desktop \
+      --replace-fail "Exec=JS8Call" "Exec=js8call"
+  '';
+
+  meta = {
+    description = "Weak-signal keyboard messaging for amateur radio";
+    longDescription = ''
+      JS8Call is software using the JS8 Digital Mode providing weak signal
+      keyboard to keyboard messaging to Amateur Radio Operators.
+
+      JS8Call-Improved is a community-driven evolution of JS8Call,
+      bringing modern features, active development, and long-term
+      support to HF digital communication. It’s fully compatible with
+      existing JS8Call versions while adding new capabilities and
+      refinements.
+    '';
+    homepage = "https://js8call-improved.com/";
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [
+      sarcasticadmin
+      pdg137
+    ];
+  };
+})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0d3d4cf78014..a36fa4a0c199 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10236,8 +10236,6 @@ with pkgs;
 
   jackmix_jack1 = jackmix.override { jack = jack1; };
 
-  js8call = qt5.callPackage ../applications/radio/js8call { };
-
   jwm = callPackage ../applications/window-managers/jwm { };
 
   jwm-settings-manager = callPackage ../applications/window-managers/jwm/jwm-settings-manager.nix { };