diff --git a/ocrd_calamari/recognize.py b/ocrd_calamari/recognize.py
index b21f6ed..06af5dc 100644
--- a/ocrd_calamari/recognize.py
+++ b/ocrd_calamari/recognize.py
@@ -5,6 +5,7 @@ import itertools
 from glob import glob
 
 import numpy as np
+from calamari_ocr import __version__ as calamari_version
 from calamari_ocr.ocr import MultiPredictor
 from calamari_ocr.ocr.voting import voter_from_proto
 from calamari_ocr.proto import VoterParams
@@ -26,6 +27,9 @@ from ocrd_utils import (
 
 from ocrd_calamari.config import OCRD_TOOL, TF_CPP_MIN_LOG_LEVEL
 
+os.environ['TF_CPP_MIN_LOG_LEVEL'] = TF_CPP_MIN_LOG_LEVEL
+from tensorflow import __version__ as tensorflow_version
+
 TOOL = 'ocrd-calamari-recognize'
 
 
@@ -33,11 +37,10 @@ class CalamariRecognize(Processor):
 
     def __init__(self, *args, **kwargs):
         kwargs['ocrd_tool'] = OCRD_TOOL['tools'][TOOL]
-        kwargs['version'] = OCRD_TOOL['version']
+        kwargs['version'] = '%s (calamari %s, tensorflow %s)' % (OCRD_TOOL['version'], calamari_version, tensorflow_version)
         super(CalamariRecognize, self).__init__(*args, **kwargs)
 
     def _init_calamari(self):
-        os.environ['TF_CPP_MIN_LOG_LEVEL'] = TF_CPP_MIN_LOG_LEVEL
 
         checkpoints = glob(self.parameter['checkpoint'])
         self.predictor = MultiPredictor(checkpoints=checkpoints)