diff --git a/greek-text-analysis/single-text/Python/requirements.txt b/greek-text-analysis/single-text/Python/requirements.txt
index fde995c..ea67d2a 100644
--- a/greek-text-analysis/single-text/Python/requirements.txt
+++ b/greek-text-analysis/single-text/Python/requirements.txt
@@ -6,7 +6,7 @@ idna==2.1
 ipaddress==1.0.16
 matplotlib==1.5.1
 nltk==3.4.5
-numpy==1.11.0
+numpy==1.22.0
 plotly==1.9.10
 pyasn1==0.1.9
 pycparser==2.14