diff --git a/ant-includes/default.properties b/ant-includes/default.properties
index b349e02..fec2f8a 100644
--- a/ant-includes/default.properties
+++ b/ant-includes/default.properties
@@ -4,7 +4,7 @@ sf.maxPoll = 200
 sf.batchSize = 20
 
 # The version of the antlib jar in lib
-sf.antlib.version = 50.0
+sf.antlib.version = 51.0
 
 # Use 'https://login.salesforce.com' for production or developer edition
 # Use 'https://test.salesforce.com for sandbox.
diff --git a/force-meta-backup.groovy b/force-meta-backup.groovy
index f0c8b27..23a65df 100755
--- a/force-meta-backup.groovy
+++ b/force-meta-backup.groovy
@@ -1,6 +1,6 @@
 #!/usr/bin/env groovy
-@Grab(group='com.force.api', module='force-partner-api', version='50.0.0')
-@Grab(group='com.force.api', module='force-metadata-api', version='50.0.0')
+@Grab(group='com.force.api', module='force-partner-api', version='51.0.0')
+@Grab(group='com.force.api', module='force-metadata-api', version='51.0.0')
 
 import com.sforce.soap.metadata.FileProperties
 import com.sforce.soap.metadata.ListMetadataQuery
@@ -326,6 +326,8 @@ class BulkMetadataManifestBuilder extends ManifestBuilder {
         'AccountRelationshipShareRule',
         'ActionLinkGroupTemplate',
         'ActionPlanTemplate',
+        'AIApplication',
+        'AIApplicationConfig',
         'AnalyticSnapshot',
         'AnimationRule',
         'ApexComponent',
@@ -340,10 +342,13 @@ class BulkMetadataManifestBuilder extends ManifestBuilder {
         'Audience',
         'AuthProvider',
         'AutoResponseRules',
+        'BatchCalcJobDefinition',
+        'BatchProcessJobDefinition',
         'BlacklistedConsumer',
         'Bot',
         'BotVersion',
         'BrandingSet',
+        'BriefcaseDefinition',
         'BusinessProcessGroup',
         'CallCenter',
         'CallCoachingMediaProvider',
@@ -370,6 +375,8 @@ class BulkMetadataManifestBuilder extends ManifestBuilder {
         'CustomPageWebLink',
         'CustomSite',
         'DataCategoryGroup',
+        'DecisionTable',
+        'DecisionTableDatasetLink',
         'DelegateGroup',
         'DuplicateRule',
         'EclairGeoData',
@@ -416,6 +423,7 @@ class BulkMetadataManifestBuilder extends ManifestBuilder {
         'MatchingRule',
         'MilestoneType',
         'MlDomain',
+        'MLPredictionDefinition',
         'MobileApplicationDetail',
         'ModerationRule',
         'MyDomainDiscoverableLogin',
@@ -454,6 +462,8 @@ class BulkMetadataManifestBuilder extends ManifestBuilder {
         'SalesWorkQueueSettings',
         'SamlSsoConfig',
         'Scontrol',
+        'ServiceAISetupDefinition',
+        'ServiceAISetupField',
         'ServiceChannel',
         'ServicePresenceStatus',
         'Settings',
diff --git a/lib/ant-salesforce-50.0.jar b/lib/ant-salesforce-51.0.jar
similarity index 83%
rename from lib/ant-salesforce-50.0.jar
rename to lib/ant-salesforce-51.0.jar
index f00e0f5..749b20d 100644
Binary files a/lib/ant-salesforce-50.0.jar and b/lib/ant-salesforce-51.0.jar differ