diff --git a/src/AoCHelper/Solver.cs b/src/AoCHelper/Solver.cs
index a35ea36..626b07e 100644
--- a/src/AoCHelper/Solver.cs
+++ b/src/AoCHelper/Solver.cs
@@ -1,6 +1,6 @@
-using Spectre.Console;
-using System.Diagnostics;
+using System.Diagnostics;
 using System.Reflection;
+using Spectre.Console;
 
 namespace AoCHelper
 {
@@ -32,7 +32,7 @@ await AnsiConsole.Live(table)
                 .Cropping(configuration.VerticalOverflowCropping)
                 .StartAsync(async ctx =>
                 {
-                    var lastProblem = LoadAllProblems(Assembly.GetEntryAssembly()!).LastOrDefault();
+                    var lastProblem = LoadAllProblems(configuration.ProblemAssemblies).LastOrDefault();
                     if (lastProblem is not null)
                     {
                         var sw = new Stopwatch();
@@ -137,7 +137,7 @@ await AnsiConsole.Live(table)
                 .StartAsync(async ctx =>
                 {
                     var sw = new Stopwatch();
-                    foreach (Type problemType in LoadAllProblems(Assembly.GetEntryAssembly()!))
+                    foreach (Type problemType in LoadAllProblems(configuration.ProblemAssemblies))
                     {
                         if (problems.Contains(problemType))
                         {
@@ -187,7 +187,7 @@ await AnsiConsole.Live(table)
                 .StartAsync(async ctx =>
                 {
                     var sw = new Stopwatch();
-                    foreach (Type problemType in LoadAllProblems(Assembly.GetEntryAssembly()!))
+                    foreach (Type problemType in LoadAllProblems(configuration.ProblemAssemblies))
                     {
                         sw.Restart();
                         // Since we're trying to instantiate them all, we don't want to show unrelated errors or render unrelated problem rows
@@ -231,7 +231,7 @@ await AnsiConsole.Live(table)
                 .StartAsync(async ctx =>
                 {
                     var sw = new Stopwatch();
-                    foreach (Type problemType in LoadAllProblems(Assembly.GetEntryAssembly()!))
+                    foreach (Type problemType in LoadAllProblems(configuration.ProblemAssemblies))
                     {
                         sw.Restart();
                         var potentialProblem = InstantiateProblem(problemType);
@@ -253,13 +253,13 @@ await AnsiConsole.Live(table)
         }
 
         /// <summary>
-        /// Loads all <see cref="BaseProblem"/> in the given assembly
+        /// Loads all <see cref="BaseProblem"/> in the given assemblies
         /// </summary>
-        /// <param name="assembly"></param>
+        /// <param name="assemblies"></param>
         /// <returns></returns>
-        internal static IEnumerable<Type> LoadAllProblems(Assembly assembly)
+        internal static IEnumerable<Type> LoadAllProblems(List<Assembly> assemblies)
         {
-            return assembly.GetTypes()
+            return assemblies.SelectMany(a => a.GetTypes())
                 .Where(type => typeof(BaseProblem).IsAssignableFrom(type) && !type.IsInterface && !type.IsAbstract)
                 .OrderBy(t => t.FullName);
         }
diff --git a/src/AoCHelper/SolverConfiguration.cs b/src/AoCHelper/SolverConfiguration.cs
index 9d084fe..fbeb83a 100644
--- a/src/AoCHelper/SolverConfiguration.cs
+++ b/src/AoCHelper/SolverConfiguration.cs
@@ -1,4 +1,5 @@
-using Spectre.Console;
+using System.Reflection;
+using Spectre.Console;
 
 namespace AoCHelper
 {
@@ -33,6 +34,12 @@ public class SolverConfiguration
         /// </summary>
         public string? ElapsedTimeFormatSpecifier { get; set; }
 
+        /// <summary>
+        /// Assemblies where the problems are located.
+        /// Defaults to the entry assembly: [Assembly.GetEntryAssembly()!]
+        /// </summary>
+        public List<Assembly> ProblemAssemblies { get; set; }
+
         /// <summary>
         /// Represents vertical overflow.
         /// <see href="https://spectreconsole.net/live/live-display"/>
@@ -47,6 +54,8 @@ public class SolverConfiguration
 
         public SolverConfiguration()
         {
+            ProblemAssemblies = [Assembly.GetEntryAssembly()!];
+
             ClearConsole = true;
             ShowOverallResults = true;
             ShowConstructorElapsedTime = false;
diff --git a/tests/AoCHelper.Test/SolverTest.cs b/tests/AoCHelper.Test/SolverTest.cs
index 66c1c05..ec7562f 100644
--- a/tests/AoCHelper.Test/SolverTest.cs
+++ b/tests/AoCHelper.Test/SolverTest.cs
@@ -117,14 +117,14 @@ public void LoadAllProblems()
         {
             Assert.Equal(
                 Assembly.GetExecutingAssembly()!.GetTypes().Count(type => typeof(BaseProblem).IsAssignableFrom(type) && !type.IsAbstract),
-                Solver.LoadAllProblems(Assembly.GetExecutingAssembly()).Count());
+                Solver.LoadAllProblems([Assembly.GetExecutingAssembly()]).Count());
         }
 
         [Fact]
         public void LoadAllProblems_OrderedByFullName()
         {
-            var orderedTypes = Solver.LoadAllProblems(Assembly.GetExecutingAssembly()).OrderBy(t => t.FullName);
-            var types = Solver.LoadAllProblems(Assembly.GetExecutingAssembly());
+            var orderedTypes = Solver.LoadAllProblems([Assembly.GetExecutingAssembly()]).OrderBy(t => t.FullName);
+            var types = Solver.LoadAllProblems([Assembly.GetExecutingAssembly()]);
 
             foreach (var (First, Second) in orderedTypes.Zip(types))
             {