diff --git a/src/Tgstation.Server.Api/Models/ErrorCode.cs b/src/Tgstation.Server.Api/Models/ErrorCode.cs
index 00800b4aa7..4dba0e189c 100644
--- a/src/Tgstation.Server.Api/Models/ErrorCode.cs
+++ b/src/Tgstation.Server.Api/Models/ErrorCode.cs
@@ -634,5 +634,11 @@ namespace Tgstation.Server.Api.Models
 		/// </summary>
 		[Description("OpenDream could not be compiled due to being unable to locate the dotnet executable!")]
 		OpenDreamCantFindDotnet,
+
+		/// <summary>
+		/// Could not install OpenDream due to it not meeting the minimum version requirements.
+		/// </summary>
+		[Description("The specified OpenDream version is too old!")]
+		OpenDreamTooOld,
 	}
 }
diff --git a/src/Tgstation.Server.Host/Components/Engine/OpenDreamInstaller.cs b/src/Tgstation.Server.Host/Components/Engine/OpenDreamInstaller.cs
index a1bda4f50b..e279f0d0cc 100644
--- a/src/Tgstation.Server.Host/Components/Engine/OpenDreamInstaller.cs
+++ b/src/Tgstation.Server.Host/Components/Engine/OpenDreamInstaller.cs
@@ -152,6 +152,9 @@ namespace Tgstation.Server.Host.Components.Engine
 					progressSection2,
 					cancellationToken);
 
+				if (!await repo.ShaIsParent("fab769776dada6b9bcad546094d78c604049e0e9", cancellationToken))
+					throw new JobException(ErrorCode.OpenDreamTooOld);
+
 				return new RepositoryEngineInstallationData(IOManager, repo, InstallationSourceSubDirectory);
 			}
 			catch
diff --git a/tests/Tgstation.Server.Tests/Live/Instance/InstanceTest.cs b/tests/Tgstation.Server.Tests/Live/Instance/InstanceTest.cs
index c674a3a42d..c3e5b32294 100644
--- a/tests/Tgstation.Server.Tests/Live/Instance/InstanceTest.cs
+++ b/tests/Tgstation.Server.Tests/Live/Instance/InstanceTest.cs
@@ -84,6 +84,55 @@ namespace Tgstation.Server.Tests.Live.Instance
 				.Run(cancellationToken);
 		}
 
+		public static async ValueTask<IEngineInstallationData> DownloadEngineVersion(
+			EngineVersion compatVersion,
+			IInstanceClient instanceClient,
+			IFileDownloader fileDownloader,
+			CancellationToken cancellationToken)
+		{
+			var odRepoDir = Path.GetFullPath(Path.Combine(instanceClient.Metadata.Path, "..", "OpenDreamRepo"));
+			var tmpIOManager = new ResolvingIOManager(new DefaultIOManager(), odRepoDir);
+
+			var mockOptions = new Mock<IOptions<GeneralConfiguration>>();
+			mockOptions.SetupGet(x => x.Value).Returns(new GeneralConfiguration());
+			IEngineInstaller byondInstaller =
+				compatVersion.Engine == EngineType.OpenDream
+				? new OpenDreamInstaller(
+					new DefaultIOManager(),
+					Mock.Of<ILogger<OpenDreamInstaller>>(),
+					new PlatformIdentifier(),
+					Mock.Of<IProcessExecutor>(),
+					new RepositoryManager(
+						new LibGit2RepositoryFactory(
+							Mock.Of<ILogger<LibGit2RepositoryFactory>>()),
+						new LibGit2Commands(),
+						tmpIOManager,
+						new NoopEventConsumer(),
+						Mock.Of<IPostWriteHandler>(),
+						Mock.Of<IGitRemoteFeaturesFactory>(),
+						Mock.Of<ILogger<Repository>>(),
+						Mock.Of<ILogger<RepositoryManager>>(),
+						new GeneralConfiguration()),
+					mockOptions.Object)
+				: new PlatformIdentifier().IsWindows
+					? new WindowsByondInstaller(
+						Mock.Of<IProcessExecutor>(),
+						Mock.Of<IIOManager>(),
+						fileDownloader,
+						Options.Create(new GeneralConfiguration()),
+						Mock.Of<ILogger<WindowsByondInstaller>>())
+					: new PosixByondInstaller(
+						Mock.Of<IPostWriteHandler>(),
+						Mock.Of<IIOManager>(),
+						fileDownloader,
+						Mock.Of<ILogger<PosixByondInstaller>>());
+
+			using var windowsByondInstaller = byondInstaller as WindowsByondInstaller;
+
+			// get the bytes for stable
+			return await byondInstaller.DownloadVersion(compatVersion, null, cancellationToken);
+		}
+		
 		public async Task RunCompatTests(
 			EngineVersion compatVersion,
 			IInstanceClient instanceClient,
@@ -147,49 +196,10 @@ namespace Tgstation.Server.Tests.Live.Instance
 
 			var jrt = new JobsRequiredTest(instanceClient.Jobs);
 
-
-			var odRepoDir = Path.GetFullPath(Path.Combine(instanceClient.Metadata.Path, "..", "OpenDreamRepo"));
-			var tmpIOManager = new ResolvingIOManager(new DefaultIOManager(), odRepoDir);
-
-			var mockOptions = new Mock<IOptions<GeneralConfiguration>>();
-			mockOptions.SetupGet(x => x.Value).Returns(new GeneralConfiguration());
-			IEngineInstaller byondInstaller =
-				compatVersion.Engine == EngineType.OpenDream
-				? new OpenDreamInstaller(
-					new DefaultIOManager(),
-					Mock.Of<ILogger<OpenDreamInstaller>>(),
-					new PlatformIdentifier(),
-					Mock.Of<IProcessExecutor>(),
-					new RepositoryManager(
-						new LibGit2RepositoryFactory(
-							Mock.Of<ILogger<LibGit2RepositoryFactory>>()),
-						new LibGit2Commands(),
-						tmpIOManager,
-						new NoopEventConsumer(),
-						Mock.Of<IPostWriteHandler>(),
-						Mock.Of<IGitRemoteFeaturesFactory>(),
-						Mock.Of<ILogger<Repository>>(),
-						Mock.Of<ILogger<RepositoryManager>>(),
-						new GeneralConfiguration()),
-					mockOptions.Object)
-				: new PlatformIdentifier().IsWindows
-					? new WindowsByondInstaller(
-						Mock.Of<IProcessExecutor>(),
-						Mock.Of<IIOManager>(),
-						fileDownloader,
-						Options.Create(new GeneralConfiguration()),
-						Mock.Of<ILogger<WindowsByondInstaller>>())
-					: new PosixByondInstaller(
-						Mock.Of<IPostWriteHandler>(),
-						Mock.Of<IIOManager>(),
-						fileDownloader,
-						Mock.Of<ILogger<PosixByondInstaller>>());
-
-			using var windowsByondInstaller = byondInstaller as WindowsByondInstaller;
-
-			// get the bytes for stable
 			EngineInstallResponse installJob2;
-			await using (var stableBytesMs = await TestingUtils.ExtractMemoryStreamFromInstallationData(await byondInstaller.DownloadVersion(compatVersion, null, cancellationToken), cancellationToken))
+			await using (var stableBytesMs = await TestingUtils.ExtractMemoryStreamFromInstallationData(
+				await DownloadEngineVersion(compatVersion, instanceClient, fileDownloader, cancellationToken),
+				cancellationToken))
 			{
 				installJob2 = await instanceClient.Engine.SetActiveVersion(new EngineVersionRequest
 				{
diff --git a/tests/Tgstation.Server.Tests/Live/TestLiveServer.cs b/tests/Tgstation.Server.Tests/Live/TestLiveServer.cs
index 6e5a48dc91..83b721cad6 100644
--- a/tests/Tgstation.Server.Tests/Live/TestLiveServer.cs
+++ b/tests/Tgstation.Server.Tests/Live/TestLiveServer.cs
@@ -40,6 +40,7 @@ using Tgstation.Server.Host.Components;
 using Tgstation.Server.Host.Configuration;
 using Tgstation.Server.Host.Database;
 using Tgstation.Server.Host.Extensions;
+using Tgstation.Server.Host.Jobs;
 using Tgstation.Server.Host.System;
 using Tgstation.Server.Tests.Live.Instance;
 
@@ -1385,15 +1386,35 @@ namespace Tgstation.Server.Tests.Live
 						if (TestingUtils.RunningInGitHubActions) // they only have 2 cores, can't handle intense parallelization
 							await byondApiCompatTests;
 
-						var odCompatTests = FailFast(
-							instanceTest
+						async Task ODCompatTests()
+						{
+							var edgeODVersionTask = EngineTest.GetEdgeVersion(EngineType.OpenDream, fileDownloader, cancellationToken);
+							;
+
+							var ex = await Assert.ThrowsExceptionAsync<JobException>(
+								() => InstanceTest.DownloadEngineVersion(
+									new EngineVersion
+									{
+										Engine = EngineType.OpenDream,
+										SourceSHA = "f1dc153caf9d84cd1d0056e52286cc0163e3f4d3", // 1b4 verified version
+									},
+									instanceClient,
+									fileDownloader,
+									cancellationToken).AsTask());
+
+							Assert.AreEqual(ErrorCode.OpenDreamTooOld, ex.ErrorCode);
+
+							await instanceTest
 								.RunCompatTests(
-									await EngineTest.GetEdgeVersion(EngineType.OpenDream, fileDownloader, cancellationToken),
+									await edgeODVersionTask,
 									adminClient.Instances.CreateClient(odInstance),
 									odDMPort,
 									odDDPort,
 									server.HighPriorityDreamDaemon,
-									cancellationToken));
+									cancellationToken);
+						}
+
+						var odCompatTests = FailFast(ODCompatTests());
 
 						if (TestingUtils.RunningInGitHubActions) // they only have 2 cores, can't handle intense parallelization
 							await odCompatTests;