diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5397bf761..575f228e7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -19,14 +19,14 @@ repos:
         args: [--maxkb=1000]
         exclude: \.ipynb
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.14.0
+    rev: v0.15.12
     hooks:
       - id: ruff
         files: spectrafit/
       - id: ruff-format
         files: spectrafit/
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.18.2
+    rev: v1.20.2
     hooks:
       - id: mypy
         additional_dependencies:
@@ -47,7 +47,7 @@ repos:
         additional_dependencies: [toml>=0.10.2]
   # pyupgrade for Python 3.9+
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.20.0
+    rev: v3.21.2
     hooks:
       - id: pyupgrade
         args: [--py39-plus, --keep-percent-format]
diff --git a/spectrafit/models/builtin.py b/spectrafit/models/builtin.py
index 2b6899bb2..f9a855280 100644
--- a/spectrafit/models/builtin.py
+++ b/spectrafit/models/builtin.py
@@ -954,7 +954,7 @@ def model_check(self, model: str) -> None:
             NotImplementedError: If the model is not implemented.
 
         """
-        model_prefix = model.split("_")[0]
+        model_prefix = model.split("_", maxsplit=1)[0]
 
         # Check in main models list
         if (