diff --git a/pyproject.toml b/pyproject.toml
index 49f349f..f6c8fd3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -61,7 +61,7 @@ scikit-learn = {version = "*", optional = true}
 fasttext-wheel = {version = "*", optional = true}
 optuna = {version = "*", optional = true}
 matplotlib = {version = "*", optional = true}
-SoMaJo = {version = "*", optional = true}
+SoMaJo = {version = ">=2.3.1", optional = true}
 torch = {version = "!=2.0.1", optional = true}  # version 2.0.1 has poetry issues
 transformers = {version = "*", optional = true}
 tiktoken = {version = "*", optional = true}
diff --git a/tests/test_somajo.py b/tests/test_somajo.py
index 3c36b20..1250f27 100644
--- a/tests/test_somajo.py
+++ b/tests/test_somajo.py
@@ -176,7 +176,6 @@ def test_UrlSwapper__no_reverse_swap_urls():
 
 
 # see https://github.com/telekom/mltb2/issues/94
-@pytest.mark.xfail
 def test_UrlSwapper__markdown_bug():
     token_extractor = TokenExtractor("de_CMC")
     url_swapper = UrlSwapper(token_extractor)