diff --git a/unittests/deployment/deployment.yaml b/unittests/deployment/deployment.yaml
index 6e9ab7f..2a37088 100644
--- a/unittests/deployment/deployment.yaml
+++ b/unittests/deployment/deployment.yaml
@@ -86,6 +86,8 @@ tests:
   - equal:
       path: spec.template.spec.terminationGracePeriodSeconds
       value: 60
+  - notExists:
+      path: spec.template.spec.tolerations
 
 - it: Test additional arguments
   set:
@@ -304,6 +306,22 @@ tests:
       path: spec.template.spec.terminationGracePeriodSeconds
       value: 120
 
+- it: Test tolerations
+  set:
+    deployment.tolerations:
+    - key: database/type
+      operator: Equal
+      value: postgres
+      effect: NoSchedule
+  asserts:
+  - equal:
+      path: spec.template.spec.tolerations
+      value:
+      - key: database/type
+        operator: Equal
+        value: postgres
+        effect: NoSchedule
+
 - it: Test additional volumeMounts and volumes
   set:
     deployment.postgresExporter.volumeMounts:
diff --git a/values.yaml b/values.yaml
index dc541f0..36606df 100644
--- a/values.yaml
+++ b/values.yaml
@@ -225,6 +225,10 @@ deployment:
 
   ## @param deployment.tolerations Tolerations of the postgres-exporter deployment.
   tolerations: []
+  # - key: database/type
+  #   operator: Equal
+  #   value: postgres
+  #   effect: NoSchedule
 
   ## @param deployment.topologySpreadConstraints TopologySpreadConstraints of the postgres-exporter deployment.
   topologySpreadConstraints: []