diff --git a/scripts/dev/build_release.py b/scripts/dev/build_release.py
index 0f20c2e76..2c140c948 100755
--- a/scripts/dev/build_release.py
+++ b/scripts/dev/build_release.py
@@ -101,8 +101,9 @@ def smoke_test(executable):
 
 
 def patch_mac_app():
-    """Patch .app to use our Info.plist."""
+    """Patch .app to use our Info.plist and save some space."""
     app_path = os.path.join('dist', 'qutebrowser.app')
+
     # Patch Info.plist - pyinstaller's options are too limiting
     plist_path = os.path.join(app_path, 'Contents', 'Info.plist')
     with open(plist_path, "rb") as f:
@@ -111,6 +112,24 @@ def patch_mac_app():
     with open(plist_path, "wb") as f:
         plistlib.dump(plist_data, f)
 
+    # Replace some duplicate files by symlinks
+    framework_path = os.path.join(app_path, 'Contents', 'Resources', 'PyQt5', 'Qt', 'lib', 'QtWebEngineCore.framework')
+
+    core_lib = os.path.join(framework_path, 'Versions', '5', 'QtWebEngineCore')
+    os.remove(core_lib)
+    core_target = os.path.join(*[os.pardir] * 7, 'MacOS', 'QtWebEngineCore')
+    os.symlink(core_target, core_lib)
+
+    framework_resource_path = os.path.join(framework_path, 'Resources')
+    for name in os.listdir(framework_resource_path):
+        file_path = os.path.join(framework_resource_path, name)
+        target = os.path.join(*[os.pardir] * 5, name)
+        if os.path.isdir(file_path):
+            shutil.rmtree(file_path)
+        else:
+            os.remove(file_path)
+        os.symlink(target, file_path)
+
 
 INFO_PLIST_UPDATES = {
     'CFBundleVersion': qutebrowser.__version__,