diff --git a/.changeset/tall-trams-play.md b/.changeset/tall-trams-play.md
new file mode 100644
index 0000000..c60c114
--- /dev/null
+++ b/.changeset/tall-trams-play.md
@@ -0,0 +1,5 @@
+---
+"helm-charts": minor
+---
+
+Supports passing additional arguments to the check-alerts task. This allows setting the concurrency and sourceTimeoutMs through helm.
diff --git a/.github/workflows/chart-test-legacy.yml b/.github/workflows/chart-test-legacy.yml
index b9e5c6f..62b6f10 100644
--- a/.github/workflows/chart-test-legacy.yml
+++ b/.github/workflows/chart-test-legacy.yml
@@ -63,7 +63,7 @@ jobs:
 
     - name: Run Helm unit tests
       run: |
-        helm plugin install https://github.com/helm-unittest/helm-unittest.git || true
+        helm plugin install https://github.com/helm-unittest/helm-unittest.git --version v1.0.3 ${{ runner.debug && '--debug' || ''}} || true
         helm unittest charts/hdx-oss-v2
 
     - name: Deploy hdx-oss-v2 chart
diff --git a/.github/workflows/chart-test.yml b/.github/workflows/chart-test.yml
index 5cb7392..ca2917a 100644
--- a/.github/workflows/chart-test.yml
+++ b/.github/workflows/chart-test.yml
@@ -63,7 +63,7 @@ jobs:
 
       - name: Run Helm unit tests
         run: |
-          helm plugin install https://github.com/helm-unittest/helm-unittest.git || true
+          helm plugin install https://github.com/helm-unittest/helm-unittest.git --version v1.0.3 ${{ runner.debug && '--debug' || ''}} || true
           helm unittest charts/clickstack
 
       - name: Deploy ClickStack chart
diff --git a/.github/workflows/helm-test-legacy.yaml b/.github/workflows/helm-test-legacy.yaml
index d6fa1a9..b48e443 100644
--- a/.github/workflows/helm-test-legacy.yaml
+++ b/.github/workflows/helm-test-legacy.yaml
@@ -29,7 +29,7 @@ jobs:
 
       - name: Install helm-unittest plugin
         run: |
-          helm plugin install https://github.com/helm-unittest/helm-unittest.git
+          helm plugin install https://github.com/helm-unittest/helm-unittest.git --version v1.0.2 ${{ runner.debug && '--debug' || ''}}
 
       - name: Run helm-unittest
         run: |
diff --git a/.github/workflows/helm-test.yaml b/.github/workflows/helm-test.yaml
index 7f27f33..83e38f0 100644
--- a/.github/workflows/helm-test.yaml
+++ b/.github/workflows/helm-test.yaml
@@ -29,7 +29,7 @@ jobs:
 
       - name: Install helm-unittest plugin
         run: |
-          helm plugin install https://github.com/helm-unittest/helm-unittest.git
+          helm plugin install https://github.com/helm-unittest/helm-unittest.git --version v1.0.3 ${{ runner.debug && '--debug' || ''}}
 
       - name: Run helm-unittest
         run: |
diff --git a/charts/clickstack/templates/cronjobs/task-checkAlerts.yaml b/charts/clickstack/templates/cronjobs/task-checkAlerts.yaml
index 21ae372..d081c77 100644
--- a/charts/clickstack/templates/cronjobs/task-checkAlerts.yaml
+++ b/charts/clickstack/templates/cronjobs/task-checkAlerts.yaml
@@ -28,9 +28,23 @@ spec:
               imagePullPolicy: {{ .Values.hyperdx.image.pullPolicy }}
               {{- $tag := .Values.hyperdx.image.tag | default .Chart.AppVersion -}}
               {{- if and (regexMatch "^[0-9]+\\.[0-9]+\\.[0-9]+" $tag) (semverCompare "< 2.7.0" $tag) }} # before esbuild revert
-              command: ["node", "/app/packages/api/tasks/index", "check-alerts"]
+              command:
+                - "node"
+                - "/app/packages/api/tasks/index"
+                - "check-alerts"
+                {{- range $key, $value := .Values.tasks.checkAlerts.additionalArgs }}
+                - "--{{ $key }}"
+                - "{{ $value }}"
+                {{- end }}
               {{- else }}
-              command: ["node", "/app/packages/api/build/tasks/index.js", "check-alerts"] # after esbuild revert
+              command: # after esbuild revert
+                - "node"
+                - "/app/packages/api/build/tasks/index.js"
+                - "check-alerts"
+                {{- range $key, $value := .Values.tasks.checkAlerts.additionalArgs }}
+                - "--{{ $key }}"
+                - "{{ $value }}"
+                {{- end }}
               {{- end }}
               envFrom:
                 - configMapRef:
diff --git a/charts/clickstack/tests/task-checkAlerts_test.yaml b/charts/clickstack/tests/task-checkAlerts_test.yaml
index 920f5bf..5acebcd 100644
--- a/charts/clickstack/tests/task-checkAlerts_test.yaml
+++ b/charts/clickstack/tests/task-checkAlerts_test.yaml
@@ -154,3 +154,63 @@ tests:
       - equal:
           path: spec.jobTemplate.spec.template.spec.containers[0].command
           value: ["node", "/app/packages/api/build/tasks/index.js", "check-alerts"]
+
+  - it: should not include additionalArgs when empty
+    set:
+      tasks:
+        enabled: true
+        checkAlerts:
+          additionalArgs: {}
+      hyperdx:
+        image:
+          tag: "2.8.0"
+    asserts:
+      - equal:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          value: ["node", "/app/packages/api/build/tasks/index.js", "check-alerts"]
+
+  - it: should include additionalArgs with -- prefix in command
+    set:
+      tasks:
+        enabled: true
+        checkAlerts:
+          additionalArgs:
+            concurrency: 6
+            sourceTimeoutMs: 90000
+      hyperdx:
+        image:
+          tag: "2.8.0"
+    asserts:
+      - contains:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          content: "--concurrency"
+      - contains:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          content: "6"
+      - contains:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          content: "--sourceTimeoutMs"
+      - contains:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          content: "90000"
+
+  - it: should include additionalArgs in pre-esbuild command path
+    set:
+      tasks:
+        enabled: true
+        checkAlerts:
+          additionalArgs:
+            concurrency: 4
+      hyperdx:
+        image:
+          tag: "2.6.0"
+    asserts:
+      - contains:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          content: "/app/packages/api/tasks/index"
+      - contains:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          content: "--concurrency"
+      - contains:
+          path: spec.jobTemplate.spec.template.spec.containers[0].command
+          content: "4"
diff --git a/charts/clickstack/values.yaml b/charts/clickstack/values.yaml
index fa6973a..57f36fe 100644
--- a/charts/clickstack/values.yaml
+++ b/charts/clickstack/values.yaml
@@ -467,6 +467,17 @@ tasks:
   enabled: false
   checkAlerts:
     schedule: "*/1 * * * *" # Runs every 1 minute
+
+    additionalArgs:
+      {}
+      # Additional command line arguments can be supplied to the check-alerts
+      # task by defining the param as a key/value pair. These are passed to the
+      # task without validation in the helm chart.
+      #
+      # Examples:
+      # concurrency: 6
+      # sourceTimeoutMs: 90000
+
     resources:
       limits:
         cpu: 200m