diff --git a/tests/protocol_tests/test_mats/testmainlambda/requirements_epi.txt b/tests/protocol_tests/test_mats/testmainlambda/requirements_epi.txt
index c1c56266..f036427c 100644
--- a/tests/protocol_tests/test_mats/testmainlambda/requirements_epi.txt
+++ b/tests/protocol_tests/test_mats/testmainlambda/requirements_epi.txt
@@ -1,3 +1,3 @@
 requests==2.22.0
-numpy==1.16.4
+numpy==1.22.0
 pandas