diff --git a/umap/utils.py b/umap/utils.py
index 27f973ca..e61a882f 100644
--- a/umap/utils.py
+++ b/umap/utils.py
@@ -222,10 +222,18 @@ class UmapManifestStaticFilesStorage(ManifestStaticFilesStorage):
         for original_path, processed_path, processed in collected:
             if processed_path.endswith(".js"):
                 path = Path(settings.STATIC_ROOT) / processed_path
-                minified = jsmin(path.read_text())
+                initial = path.read_text()
+                path_map = path.with_suffix(f"{path.suffix}.map")
+                minified = jsmin(initial)
+                minified += f"\n//# sourceMappingURL={path_map.name}"
                 path.write_text(minified)
+                path_map.write_text(initial)
             if processed_path.endswith(".css"):
                 path = Path(settings.STATIC_ROOT) / processed_path
-                minified = cssmin(path.read_text())
+                initial = path.read_text()
+                path_map = path.with_suffix(f"{path.suffix}.map")
+                minified = cssmin(initial)
+                minified += f"\n//# sourceMappingURL={path_map.name}"
                 path.write_text(minified)
+                path_map.write_text(initial)
             yield original_path, processed_path, True