diff --git a/src/Seq.Api/Model/Alerting/AlertActivityPart.cs b/src/Seq.Api/Model/Alerting/AlertActivityPart.cs
index f869be3..97f25f5 100644
--- a/src/Seq.Api/Model/Alerting/AlertActivityPart.cs
+++ b/src/Seq.Api/Model/Alerting/AlertActivityPart.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+
 // ReSharper disable UnusedAutoPropertyAccessor.Global
 
 namespace Seq.Api.Model.Alerting
@@ -39,9 +40,21 @@ public class AlertActivityPart
         /// </summary>
         public List<AlertOccurrencePart> RecentOccurrences { get; set; } = new List<AlertOccurrencePart>();
 
+        /// <summary>
+        /// Minimal metrics for the most recent occurrences of the alert that triggered notifications.
+        /// The metrics in this list are a superset of <see cref="RecentOccurrences"/>.
+        /// </summary>
+        public List<AlertOccurrenceRangePart> RecentOccurrenceRanges { get; set; } =
+            new List<AlertOccurrenceRangePart>();
+
         /// <summary>
         /// The number of times this alert has been triggered since its creation.
         /// </summary>
         public int TotalOccurrences { get; set; }
+
+        /// <summary>
+        /// The detection time of the most recent occurrence not included in <see cref="RecentOccurrences"/>.
+        /// </summary>
+        public DateTime? LastEarlierOccurrence { get; set; }
     }
 }
diff --git a/src/Seq.Api/Model/Alerting/AlertOccurrenceRangePart.cs b/src/Seq.Api/Model/Alerting/AlertOccurrenceRangePart.cs
new file mode 100644
index 0000000..bd2df84
--- /dev/null
+++ b/src/Seq.Api/Model/Alerting/AlertOccurrenceRangePart.cs
@@ -0,0 +1,16 @@
+using Seq.Api.Model.LogEvents;
+using Seq.Api.Model.Shared;
+
+namespace Seq.Api.Model.Alerting
+{
+    /// <summary>
+    /// An occurrence metric of an alert that triggered notifications.
+    /// </summary>
+    public class AlertOccurrenceRangePart
+    {
+        /// <summary>
+        /// The time grouping that triggered the alert.
+        /// </summary>
+        public DateTimeRange DetectedOverRange { get; set; }
+    }
+}
diff --git a/src/Seq.Api/Model/Apps/AppPackagePart.cs b/src/Seq.Api/Model/Apps/AppPackagePart.cs
index 6064781..8cd87ee 100644
--- a/src/Seq.Api/Model/Apps/AppPackagePart.cs
+++ b/src/Seq.Api/Model/Apps/AppPackagePart.cs
@@ -40,12 +40,7 @@ public class AppPackagePart
         /// Package authorship information.
         /// </summary>
         public string Authors { get; set; }
-
-        /// <summary>
-        /// URL of an icon for the app package.
-        /// </summary>
-        public string IconUrl { get; set; }
-
+        
         /// <summary>
         /// URL of the package license.
         /// </summary>
diff --git a/src/Seq.Api/ResourceGroups/AlertsResourceGroup.cs b/src/Seq.Api/ResourceGroups/AlertsResourceGroup.cs
index 6961422..1d26cc1 100644
--- a/src/Seq.Api/ResourceGroups/AlertsResourceGroup.cs
+++ b/src/Seq.Api/ResourceGroups/AlertsResourceGroup.cs
@@ -18,6 +18,7 @@
 using System.Threading.Tasks;
 using Seq.Api.Model;
 using Seq.Api.Model.Alerting;
+using Seq.Api.Model.Signals;
 using Seq.Api.Model.Users;
 
 namespace Seq.Api.ResourceGroups
@@ -55,17 +56,25 @@ public async Task<AlertEntity> FindAsync(string id, CancellationToken cancellati
         public async Task<List<AlertEntity>> ListAsync(string ownerId = null, bool shared = false, CancellationToken cancellationToken = default)
         {
             var parameters = new Dictionary<string, object> { { "ownerId", ownerId }, { "shared", shared } };
-            return await GroupListAsync<AlertEntity>("Items", parameters, cancellationToken: cancellationToken).ConfigureAwait(false);
+            return await GroupListAsync<AlertEntity>("Items", parameters, cancellationToken).ConfigureAwait(false);
         }
 
         /// <summary>
         /// Construct a alert with server defaults pre-initialized.
         /// </summary>
         /// <param name="cancellationToken"><see cref="CancellationToken"/> allowing the operation to be canceled.</param>
+        /// <param name="signal">The source of events that will contribute to the alert.</param>
+        /// <param name="query">An SQL query that will supply default clauses to the new alert.</param>
         /// <returns>The unsaved alert.</returns>
-        public async Task<AlertEntity> TemplateAsync(CancellationToken cancellationToken = default)
+        public async Task<AlertEntity> TemplateAsync(SignalExpressionPart signal = null, string query = null, CancellationToken cancellationToken = default)
         {
-            return await GroupGetAsync<AlertEntity>("Template", cancellationToken: cancellationToken).ConfigureAwait(false);
+            var parameters = new Dictionary<string, object>
+            {
+                ["signal"] = signal?.ToString(),
+                ["q"] = query
+            };
+            
+            return await GroupGetAsync<AlertEntity>("Template", parameters, cancellationToken).ConfigureAwait(false);
         }
 
         /// <summary>
diff --git a/src/Seq.Api/Seq.Api.csproj b/src/Seq.Api/Seq.Api.csproj
index 643cb0b..6976adc 100644
--- a/src/Seq.Api/Seq.Api.csproj
+++ b/src/Seq.Api/Seq.Api.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <Description>Client library for the Seq HTTP API.</Description>
-    <VersionPrefix>2021.3.0</VersionPrefix>
+    <VersionPrefix>2021.3.1</VersionPrefix>
     <Authors>Datalust;Contributors</Authors>
     <TargetFramework>netstandard2.0</TargetFramework>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>