diff --git a/pyproject.toml.draft b/pyproject.toml.draft
index aaea4cc..32c927d 100644
--- a/pyproject.toml.draft
+++ b/pyproject.toml.draft
@@ -24,7 +24,7 @@ classifiers = [
 dependencies = [
     "ocrd >= 2.63.3",
     "numpy <1.24.0",
-    "scikit-learn >= 1.4.1",
+    "scikit-learn >= 1.3.2",
     "tensorflow == 2.12.1",
     "imutils >= 0.5.4",
     "matplotlib",
diff --git a/requirements.txt b/requirements.txt
index f39359c..667a630 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 # ocrd includes opencv, numpy, shapely, click
 ocrd >= 2.63.3
 numpy <1.24.0
-scikit-learn >= 1.4.1
+scikit-learn == 1.3.2 # only version supporting Python 3.8-3.12
 tensorflow == 2.12.1
 imutils >= 0.5.4
 matplotlib