diff --git a/pyproject.toml b/pyproject.toml
index a36204b..1193ecc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ python = "^3.8.1"
 pytest = ">=8.0.0"
 rich = ">=12.0.0"
 textual = ">=0.28.0"
-syrupy = "4.8.0"
+syrupy = ">=5.0.0"
 jinja2 = ">=3.0.0"
 
 [tool.poetry.plugins."pytest11"]
diff --git a/pytest_textual_snapshot.py b/pytest_textual_snapshot.py
index 44c5fd4..1820d4c 100644
--- a/pytest_textual_snapshot.py
+++ b/pytest_textual_snapshot.py
@@ -31,12 +31,12 @@
 
 
 class SVGImageExtension(SingleFileSnapshotExtension):
-    _file_extension = "svg"
+    file_extension = "svg"
     _write_mode = WriteMode.TEXT
 
-    def _read_snapshot_data_from_location(self, *args, **kwargs) -> Optional["SerializableData"]:
+    def read_snapshot_data_from_location(self, *args, **kwargs) -> Optional["SerializableData"]:
         """Normalize SVG data right after they are loaded from persistent storage."""
-        data = super()._read_snapshot_data_from_location(*args, **kwargs)
+        data = super().read_snapshot_data_from_location(*args, **kwargs)
         if data is not None:
             data = normalize_svg(data)
         return data