diff --git a/ci/tests/Jenkinsfile.e2e-nightly b/ci/tests/Jenkinsfile.e2e-nightly
index 172cbf18b1..e99d81fec3 100644
--- a/ci/tests/Jenkinsfile.e2e-nightly
+++ b/ci/tests/Jenkinsfile.e2e-nightly
@@ -48,7 +48,7 @@ pipeline {
           dir('test/appium/tests') {
             sh """
               python3 -m pytest \
-                --numprocesses 16 \
+                --numprocesses 15 \
                 --rerun_count=2 \
                 --testrail_report=True \
                 -m testrail_id \
diff --git a/ci/tests/Jenkinsfile.e2e-prs b/ci/tests/Jenkinsfile.e2e-prs
index 7b095a8933..caa276eb40 100644
--- a/ci/tests/Jenkinsfile.e2e-prs
+++ b/ci/tests/Jenkinsfile.e2e-prs
@@ -84,7 +84,7 @@ pipeline {
           dir('test/appium/tests') {
             sh """
               python3 -m pytest \
-                --numprocesses 16 \
+                --numprocesses 15 \
                 --rerun_count=2 \
                 --testrail_report=True \
                 -m "${params.TEST_MARKERS}" \
diff --git a/ci/tests/Jenkinsfile.e2e-upgrade b/ci/tests/Jenkinsfile.e2e-upgrade
index b1f2a56235..5bd15d3b4b 100644
--- a/ci/tests/Jenkinsfile.e2e-upgrade
+++ b/ci/tests/Jenkinsfile.e2e-upgrade
@@ -53,7 +53,7 @@ pipeline {
             sh """
               python3 -m pytest \
                 -m upgrade \
-                --numprocesses 16 \
+                --numprocesses 15 \
                 --rerun_count=2 \
                 --testrail_report=True \
                 --network=${params.NETWORK} \