diff --git a/arkindex/dataimport/tests/ml_tools/classifier/config.yml b/arkindex/dataimport/tests/ml_tools/classifier/config.yml
index b58ed1f7bd98ab80d92b17e5decef927fa42a046..a8f01888db9035992561e61a9e0356effe373321 100644
--- a/arkindex/dataimport/tests/ml_tools/classifier/config.yml
+++ b/arkindex/dataimport/tests/ml_tools/classifier/config.yml
@@ -8,3 +8,4 @@ docker:
 classes:
   - class_1
   - class_2
+library: scikit-learn
diff --git a/arkindex/dataimport/tests/ml_tools/recognizer/config.yml b/arkindex/dataimport/tests/ml_tools/recognizer/config.yml
index 5ec28028d0ac258e772f0695d2bdfbf30f243b89..0acd4107ac52153460aa17138c3d1c2b1e4625db 100644
--- a/arkindex/dataimport/tests/ml_tools/recognizer/config.yml
+++ b/arkindex/dataimport/tests/ml_tools/recognizer/config.yml
@@ -5,4 +5,4 @@ slug: dummy_recognizer
 version: 0.4.2
 docker:
   image: some_image
-tesseract: []
+library: tesseract