diff --git a/pyproject.toml b/pyproject.toml
index c76f7e7..67544bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ version = "0.1.0"
 
 dependencies = [
     "ocrd >= 2.23.3",
-    "tensorflow >= 2.12.0",
+    "tensorflow == 2.12.1",
     "scikit-learn >= 0.23.2",
     "imutils >= 0.5.3",
     "numpy < 1.24.0",