diff --git a/Chart.yaml b/Chart.yaml
index f2aeaa6..eb1d72c 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -1,4 +1,4 @@
 apiVersion: v1
 name: pgdog
-version: v0.66
+version: v0.67
 appVersion: "0.1.44"
diff --git a/templates/config.yaml b/templates/config.yaml
index 43fe013..f344862 100644
--- a/templates/config.yaml
+++ b/templates/config.yaml
@@ -391,13 +391,16 @@ data:
         {{- if .maxEntries }}
         max_entries = {{ include "pgdog.intval" .maxEntries }}
         {{- end }}
-        {{- if .queryPlanThreshold }}
+        {{- if .queryPlansThreshold }}
         query_plans_threshold = {{ include "pgdog.intval" .queryPlansThreshold }}
         {{- end }}
         {{- if .queryPlansCache }}
         query_plans_cache = {{ include "pgdog.intval" .queryPlansCache }}
         {{- end }}
-        {{- if .queryPlanMaxAge }}
+        {{- if .queryPlansSampleRate }}
+        query_plans_sample_rate = {{ .queryPlansSampleRate }}
+        {{- end }}
+        {{- if .queryPlansMaxAge }}
         query_plans_max_age = {{ include "pgdog.intval" .queryPlansMaxAge }}
         {{- end }}
         {{- if .maxErrors }}
diff --git a/test/values-query-stats.yaml b/test/values-query-stats.yaml
index dfb727c..8879c05 100644
--- a/test/values-query-stats.yaml
+++ b/test/values-query-stats.yaml
@@ -5,6 +5,7 @@ queryStats:
   queryPlansThreshold: 500
   queryPlansCache: 200
   queryPlansMaxAge: 30000
+  queryPlansSampleRate: 0.5
   maxErrors: 250
   maxErrorAge: 600000
   idleInTransactionThreshold: 5000
diff --git a/values.yaml b/values.yaml
index ef433da..14c125e 100644
--- a/values.yaml
+++ b/values.yaml
@@ -536,6 +536,7 @@ queryStats:
   queryPlansThreshold: 1000
   queryPlansMaxAge: 15000
   queryPlansCache: 100
+  queryPlansSampleRate: 1.0
   maxErrors: 100
   maxErrorAge: 300000
 # Control configuration (PgDog EE)