diff --git a/tools/osx-bundle.sh b/tools/osx-bundle.sh
index 29e0fbfd9..813151a55 100755
--- a/tools/osx-bundle.sh
+++ b/tools/osx-bundle.sh
@@ -105,5 +105,14 @@ echo
 echo "---- Fixing libraries ----"
 sudo python3 "${SRC_DIR}/tools/osx-fix-libs.py" "${PKG_DIR}/Contents/MacOS/aegisub" || exit $?
 
+echo
+echo "---- Resigning ----"
+# After bundling and rewriting dylib paths we need to resign everything.
+if codesign -d "${PKG_DIR}/Contents/MacOS/aegisub"; then
+  for fname in "${PKG_DIR}/Contents/MacOS/"*; do
+    codesign -s ${AEGISUB_BUNDLE_SIGNATURE:--} -vf "${fname}"
+  done
+fi
+
 echo
 echo "Done creating \"${PKG_DIR}\""