diff --git a/infrastructure/lib/stacks/monitoringDashboard.ts b/infrastructure/lib/stacks/monitoringDashboard.ts
index b98a349..2751ee4 100644
--- a/infrastructure/lib/stacks/monitoringDashboard.ts
+++ b/infrastructure/lib/stacks/monitoringDashboard.ts
@@ -80,7 +80,7 @@ export class OpenSearchMetricsMonitoringStack extends Stack {
     private snsMonitorCanaryFailed(canaryName: string, canaryUrl: string, vpcStack: VpcStack): void {
         const canary = new Canary(this, 'CanaryHeartbeatMonitor', {
             canaryName: canaryName,
-            schedule: Schedule.rate(Duration.minutes(1)),
+            schedule: Schedule.rate(Duration.minutes(5)),
             test: Test.custom({
                 code: Code.fromAsset(path.join(__dirname, '../../canary')),
                 handler: 'urlMonitor.handler',
diff --git a/infrastructure/lib/stacks/opensearch.ts b/infrastructure/lib/stacks/opensearch.ts
index 1554251..ad78518 100644
--- a/infrastructure/lib/stacks/opensearch.ts
+++ b/infrastructure/lib/stacks/opensearch.ts
@@ -126,7 +126,7 @@ export class OpenSearchDomainStack extends Stack {
         }
 
         this.domain = new opensearch.Domain(this, 'OpenSearchHealthDomain', {
-            version: opensearch.EngineVersion.OPENSEARCH_2_11,
+            version: opensearch.EngineVersion.OPENSEARCH_2_13,
             vpc: props.vpcStack.vpc,
             vpcSubnets: [this.props.vpcStack.subnets],
             securityGroups: props.vpcStack.securityGroup ? [props.vpcStack.securityGroup] : undefined,
@@ -137,7 +137,7 @@ export class OpenSearchDomainStack extends Stack {
                 masterNodes: 3,
                 dataNodes: 6,
                 dataNodeInstanceType: "r6g.2xlarge.search",
-                masterNodeInstanceType: "m6g.large.search",
+                masterNodeInstanceType: "m6g.xlarge.search",
             },
             ebs: {
                 enabled: true,
diff --git a/infrastructure/lib/stacks/opensearchNginxProxyReadonly.ts b/infrastructure/lib/stacks/opensearchNginxProxyReadonly.ts
index cc075e3..ca4f3ad 100644
--- a/infrastructure/lib/stacks/opensearchNginxProxyReadonly.ts
+++ b/infrastructure/lib/stacks/opensearchNginxProxyReadonly.ts
@@ -189,6 +189,7 @@ export class OpenSearchMetricsNginxReadonly extends Stack {
                     proxy_buffers 4 256k;
                     proxy_busy_buffers_size 256k;
                     proxy_temp_file_write_size 256k;
+                    proxy_max_temp_file_size 4096m;
                 }
             }'`;
     }
diff --git a/infrastructure/package-lock.json b/infrastructure/package-lock.json
index 402e605..88b12f8 100644
--- a/infrastructure/package-lock.json
+++ b/infrastructure/package-lock.json
@@ -8,7 +8,7 @@
       "name": "infrastructure",
       "version": "0.1.0",
       "dependencies": {
-        "aws-cdk-lib": "2.144.0",
+        "aws-cdk-lib": "2.146.0",
         "constructs": "^10.0.0",
         "source-map-support": "^0.5.21"
       },
@@ -1250,9 +1250,9 @@
       }
     },
     "node_modules/aws-cdk-lib": {
-      "version": "2.144.0",
-      "resolved": "https://registry.npmjs.org/aws-cdk-lib/-/aws-cdk-lib-2.144.0.tgz",
-      "integrity": "sha512-DpyIyTs8NHX6WgAyYM2mGorirIk+eTjWzXGQRfzAe40qkwcqsb5Ax4JEl5gz1OEo9QIJIgWDtmImgWN0tUbILA==",
+      "version": "2.146.0",
+      "resolved": "https://registry.npmjs.org/aws-cdk-lib/-/aws-cdk-lib-2.146.0.tgz",
+      "integrity": "sha512-W3F2zH+P7hUxmu2dlEKJBBi6Twc4//NsJJW00h2LN0dKU+2302QY8jR+P7jgEYzZ7U50phtH4zO6BPmJrhLVEg==",
       "bundleDependencies": [
         "@balena/dockerignore",
         "case",
@@ -1279,7 +1279,7 @@
         "mime-types": "^2.1.35",
         "minimatch": "^3.1.2",
         "punycode": "^2.3.1",
-        "semver": "^7.6.0",
+        "semver": "^7.6.2",
         "table": "^6.8.2",
         "yaml": "1.10.2"
       },
@@ -1296,7 +1296,7 @@
       "license": "Apache-2.0"
     },
     "node_modules/aws-cdk-lib/node_modules/ajv": {
-      "version": "8.13.0",
+      "version": "8.16.0",
       "inBundle": true,
       "license": "MIT",
       "dependencies": {
@@ -1456,17 +1456,6 @@
       "inBundle": true,
       "license": "MIT"
     },
-    "node_modules/aws-cdk-lib/node_modules/lru-cache": {
-      "version": "6.0.0",
-      "inBundle": true,
-      "license": "ISC",
-      "dependencies": {
-        "yallist": "^4.0.0"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/aws-cdk-lib/node_modules/mime-db": {
       "version": "1.52.0",
       "inBundle": true,
@@ -1514,12 +1503,9 @@
       }
     },
     "node_modules/aws-cdk-lib/node_modules/semver": {
-      "version": "7.6.0",
+      "version": "7.6.2",
       "inBundle": true,
       "license": "ISC",
-      "dependencies": {
-        "lru-cache": "^6.0.0"
-      },
       "bin": {
         "semver": "bin/semver.js"
       },
@@ -1598,11 +1584,6 @@
         "punycode": "^2.1.0"
       }
     },
-    "node_modules/aws-cdk-lib/node_modules/yallist": {
-      "version": "4.0.0",
-      "inBundle": true,
-      "license": "ISC"
-    },
     "node_modules/aws-cdk-lib/node_modules/yaml": {
       "version": "1.10.2",
       "inBundle": true,
@@ -3983,7 +3964,6 @@
       "version": "6.3.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
       "integrity": "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==",
-      "dev": true,
       "bin": {
         "semver": "bin/semver.js"
       }
diff --git a/infrastructure/package.json b/infrastructure/package.json
index d68646a..f512e20 100644
--- a/infrastructure/package.json
+++ b/infrastructure/package.json
@@ -20,7 +20,7 @@
     "typescript": "~3.9.7"
   },
   "dependencies": {
-    "aws-cdk-lib": "2.144.0",
+    "aws-cdk-lib": "2.146.0",
     "constructs": "^10.0.0",
     "source-map-support": "^0.5.21"
   }
diff --git a/infrastructure/test/monitoring-stack.test.ts b/infrastructure/test/monitoring-stack.test.ts
index 99826a3..ed39220 100644
--- a/infrastructure/test/monitoring-stack.test.ts
+++ b/infrastructure/test/monitoring-stack.test.ts
@@ -181,7 +181,7 @@ test('Monitoring Stack Test', () => {
         "RuntimeVersion": "syn-nodejs-puppeteer-7.0",
         "Schedule": {
             "DurationInSeconds": "0",
-            "Expression": "rate(1 minute)"
+            "Expression": "rate(5 minutes)"
         },
         "StartCanaryAfterCreation": true,
         "VPCConfig": {
diff --git a/infrastructure/test/opensearch-stack.test.ts b/infrastructure/test/opensearch-stack.test.ts
index b5e4bb4..698d44a 100644
--- a/infrastructure/test/opensearch-stack.test.ts
+++ b/infrastructure/test/opensearch-stack.test.ts
@@ -92,6 +92,18 @@ test('OpenSearchDomain Stack Test', () => {
             "UserPoolId": {
                 "Ref": "UserPool"
             }
-        }
+        },
+        "ClusterConfig": {
+            "DedicatedMasterCount": 3,
+            "DedicatedMasterEnabled": true,
+            "DedicatedMasterType": "m6g.xlarge.search",
+            "InstanceCount": 6,
+            "InstanceType": "r6g.2xlarge.search",
+            "ZoneAwarenessConfig": {
+                "AvailabilityZoneCount": 2
+            },
+            "ZoneAwarenessEnabled": true
+        },
+        "EngineVersion": "OpenSearch_2.13",
     });
 });