diff --git a/src/requirements.txt b/src/requirements.txt
index 8a35518..2c21a73 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -1,8 +1,9 @@
 matplotlib==3.0.3
-numpy==1.16.3
-pylint==2.5.0
+numpy==1.22.2
+pylint==2.7.0
 pytest==4.3.0
 networkx==2.2
 tabulate==0.8.3
 pandas==0.24.2
-tsplib95==0.3.3
\ No newline at end of file
+tsplib95==0.3.3
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file