diff --git a/requirements.txt b/requirements.txt
index 50a3ee91c..943b3609a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ nltk>=3.0.5     # TweetTokenizer introduced in 3.0.5
 scikit-learn
 numpy
 python-dateutil<3.0.0  # denpendency for botocore
-gensim>=0.12.3  # LDA's show topics unified in 0.12.3
+gensim>=0.12.3,!=4.0.0,!=4.0.1  # LDA's show topics unified in 0.12.3; 4.0 and 4.0.1 require numpy>=1.17 but do not have that in requirements - text addon do not work in envs with numpy<1.17
 setuptools-git
 Orange3 >=3.28.0
 tweepy