diff --git a/pkgs/by-name/ov/ovito/package.nix b/pkgs/by-name/ov/ovito/package.nix
index ab4eaaa8e06b..29482befe143 100644
--- a/pkgs/by-name/ov/ovito/package.nix
+++ b/pkgs/by-name/ov/ovito/package.nix
@@ -15,26 +15,32 @@
   openssl,
   python3,
   qt6Packages,
+  imagemagick,
   copyDesktopItems,
   nix-update-script,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "ovito";
-  version = "3.14.1";
+  version = "3.15.0";
 
   src = fetchFromGitLab {
     owner = "stuko";
     repo = "ovito";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-SKE07bk/8cZ2etQtLrGZyp2DrNiyVk6mrgxlvJmG+Xk=";
+    hash = "sha256-017GjyHPHqrZt03lRFJn9yxFhD6HHyhX5vxsRX06PdA=";
     fetchSubmodules = true;
   };
-  patches = [ ./zstd.patch ];
+
+  postPatch = ''
+    substituteInPlace src/ovito/core/CMakeLists.txt \
+      --replace-fail " IF(OVITO_BUILD_CONDA)" " IF(TRUE)"
+  '';
 
   nativeBuildInputs = [
     cmake
     qt6Packages.wrapQtAppsHook
+    imagemagick
     copyDesktopItems
   ];
 
@@ -79,7 +85,8 @@ stdenv.mkDerivation (finalAttrs: {
       };
     in
     ''
-      install -Dm644 ${icon} $out/share/pixmaps/ovito.png
+      mkdir -p $out/share/icons/hicolor/512x512/apps
+      magick ${icon} -resize 512x512 $out/share/icons/hicolor/512x512/apps/ovito.png
     '';
 
   passthru.updateScript = nix-update-script { };
diff --git a/pkgs/by-name/ov/ovito/zstd.patch b/pkgs/by-name/ov/ovito/zstd.patch
deleted file mode 100644
index f5a9ce28ee09..000000000000
--- a/pkgs/by-name/ov/ovito/zstd.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/src/ovito/core/CMakeLists.txt b/src/ovito/core/CMakeLists.txt
-index 1b49746a6..7fda02bf4 100755
---- a/src/ovito/core/CMakeLists.txt
-+++ b/src/ovito/core/CMakeLists.txt
-@@ -188,7 +188,7 @@ IF(ZLIB_FOUND)
-         IF(OVITO_BUILD_CONDA)
-             TARGET_LINK_LIBRARIES(Core PUBLIC zstd::libzstd)
-         ELSE()
--            TARGET_LINK_LIBRARIES(Core PUBLIC zstd::libzstd_static)
-+            TARGET_LINK_LIBRARIES(Core PUBLIC zstd::libzstd)
-         ENDIF()
-         # Build the zstd zlib-wrapper source files.
-         TARGET_INCLUDE_DIRECTORIES(Core PUBLIC "$<BUILD_INTERFACE:${OVITO_SOURCE_BASE_DIR}/src/3rdparty/zstd/zlibWrapper>")