diff --git a/charts/cluster/README.md b/charts/cluster/README.md
index 2d57ef6c7..db333211f 100644
--- a/charts/cluster/README.md
+++ b/charts/cluster/README.md
@@ -173,6 +173,7 @@ refer to  the [CloudNativePG Documentation](https://cloudnative-pg.io/documentat
 | cluster.postgresGID | int | `-1` | The GID of the postgres user inside the image, defaults to 26 |
 | cluster.postgresUID | int | `-1` | The UID of the postgres user inside the image, defaults to 26 |
 | cluster.postgresql.parameters | object | `{}` | PostgreSQL configuration options (postgresql.conf) |
+| cluster.postgresql.synchronous | object | `{}` | SynchronousReplicaConfiguration. See: https://cloudnative-pg.io/documentation/current/cloudnative-pg.v1/#postgresql-cnpg-io-v1-SynchronousReplicaConfiguration |
 | cluster.postgresql.pg_hba | list | `[]` | PostgreSQL Host Based Authentication rules (lines to be appended to the pg_hba.conf file) |
 | cluster.postgresql.pg_ident | list | `[]` | PostgreSQL User Name Maps rules (lines to be appended to the pg_ident.conf file) |
 | cluster.postgresql.shared_preload_libraries | list | `[]` | Lists of shared preload libraries to add to the default ones |
diff --git a/charts/cluster/templates/cluster.yaml b/charts/cluster/templates/cluster.yaml
index 7c15ded63..715cf0094 100644
--- a/charts/cluster/templates/cluster.yaml
+++ b/charts/cluster/templates/cluster.yaml
@@ -77,6 +77,10 @@ spec:
     pg_ident:
       {{- toYaml . | nindent 6 }}
     {{- end }}
+    {{- with .Values.cluster.postgresql.synchronous }}
+    synchronous:
+      {{- toYaml . | nindent 6 }}
+    {{ end }}
     {{- with .Values.cluster.postgresql.parameters }}
     parameters:
       {{- toYaml . | nindent 6 }}
diff --git a/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster-assert.yaml b/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster-assert.yaml
index 604c07d51..b8ff318d5 100644
--- a/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster-assert.yaml
+++ b/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster-assert.yaml
@@ -21,6 +21,9 @@ spec:
       - mymap   /^(.*)@mydomain\.com$      \1
     shared_preload_libraries:
       - pgaudit
+    synchronous:
+      method: any
+      number: 1
   bootstrap:
     initdb:
       database: mydb
diff --git a/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster.yaml b/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster.yaml
index 054a5cb4b..68ccba903 100644
--- a/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster.yaml
+++ b/charts/cluster/test/postgresql-cluster-configuration/01-non_default_configuration_cluster.yaml
@@ -62,6 +62,9 @@ cluster:
       - mymap   /^(.*)@mydomain\.com$      \1
     shared_preload_libraries:
       - pgaudit
+    synchronous:
+      method: any
+      number: 1
   initdb:
     database: mydb
     owner: dante
diff --git a/charts/cluster/values.schema.json b/charts/cluster/values.schema.json
index 4b6580826..128fb02f7 100644
--- a/charts/cluster/values.schema.json
+++ b/charts/cluster/values.schema.json
@@ -273,6 +273,9 @@
                         },
                         "shared_preload_libraries": {
                             "type": "array"
+                        },
+                        "synchronous": {
+                            "type": "object"
                         }
                     }
                 },
diff --git a/charts/cluster/values.yaml b/charts/cluster/values.yaml
index 561e1cf5c..1d650806b 100644
--- a/charts/cluster/values.yaml
+++ b/charts/cluster/values.yaml
@@ -262,6 +262,10 @@ cluster:
     # -- PostgreSQL configuration options (postgresql.conf)
     parameters: {}
       # max_connections: 300
+    # -- Quorum-based Synchronous Replication
+    synchronous: {}
+     # method: any
+     # number: 1
     # -- PostgreSQL Host Based Authentication rules (lines to be appended to the pg_hba.conf file)
     pg_hba: []
       # - host all all 10.244.0.0/16 md5