diff --git a/test/lib/external/FactorioVersions.test.js b/test/lib/external/FactorioVersions.test.js
index 30e4f3ae..32b86dad 100644
--- a/test/lib/external/FactorioVersions.test.js
+++ b/test/lib/external/FactorioVersions.test.js
@@ -51,8 +51,16 @@ describe("FactorioVersions", function() {
 
 			const versions = await fetchFactorioVersions();
 			assert.deepEqual(versions, [
-				{ stable: false, version: "2.0.73", downloadUrl: "https://factorio.com/download/archive/2.0.73" },
-				{ stable: true, version: "2.0.72", downloadUrl: "https://factorio.com/download/archive/2.0.72" },
+				{
+					stable: false,
+					version: "2.0.73",
+					headlessUrl: "www.factorio.com/get-download/2.0.73/headless/linux64",
+				},
+				{
+					stable: true,
+					version: "2.0.72",
+					headlessUrl: "www.factorio.com/get-download/2.0.72/headless/linux64",
+				},
 			]);
 		});
 		it("deduplicates versions by last occurrence", async function() {
@@ -79,7 +87,11 @@ describe("FactorioVersions", function() {
 
 			const versions = await fetchFactorioVersions();
 			assert.deepEqual(versions, [
-				{ stable: true, version: "2.0.73", downloadUrl: "https://factorio.com/download/archive/2.0.73" },
+				{
+					stable: true,
+					version: "2.0.73",
+					headlessUrl: "www.factorio.com/get-download/2.0.73/headless/linux64",
+				},
 			]);
 		});
 		it("thorws on HTTP error status", async function() {
@@ -105,18 +117,18 @@ describe("FactorioVersions", function() {
 			mockFetch(await readFile("test/file/html/factorio-download-archive.html"));
 
 			const versions = await fetchFactorioVersions();
-			assert.equal(versions.length, 111);
-			assert.equal(versions.filter(v => v.stable).length, 53);
-			assert.equal(versions.filter(v => !v.stable).length, 58);
+			assert.equal(versions.length, 105);
+			assert.equal(versions.filter(v => v.stable).length, 48);
+			assert.equal(versions.filter(v => !v.stable).length, 57);
 		});
 		it("parses versions from live api", async function() {
 			slowTest(this);
 			global.fetch = originalFetch;
 
 			const versions = await fetchFactorioVersions();
-			assert.ok(versions.length >= 111);
-			assert.ok(versions.filter(v => v.stable).length >= 53);
-			assert.ok(versions.filter(v => !v.stable).length >= 58);
+			assert.ok(versions.length >= 105);
+			assert.ok(versions.filter(v => v.stable).length >= 48);
+			assert.ok(versions.filter(v => !v.stable).length >= 57);
 		});
 	});
 });
diff --git a/test/messages/controller.test.js b/test/messages/controller.test.js
index 1e345475..7b735e9b 100644
--- a/test/messages/controller.test.js
+++ b/test/messages/controller.test.js
@@ -34,4 +34,44 @@ describe("messages/controller", function() {
 			);
 		});
 	});
+
+	describe("External", function() {
+		it("runs", async function() {
+			let callCount = 0;
+			const versions = [
+				{ version: "1.2.3", stable: true, headlessUrl: "path/to/download" },
+				{ version: "1.2.4", stable: false, headlessUrl: "path/to/download" },
+			];
+
+			// Mock the cache to avoid needless fetches
+			controller.factorioVersions = new lib.ValueCache(async () => {
+				callCount += 1;
+				return versions;
+			});
+
+			// First call should result in a fetch
+			const versions1 = await controlConnection.handleFactorioVersionsRequest(
+				new lib.FactorioVersionsRequest()
+			);
+
+			assert.deepEqual(versions1, versions);
+			assert.equal(callCount, 1);
+
+			// Second call should not fetch due to default maxAgeMs being greater than 0
+			const versions2 = await controlConnection.handleFactorioVersionsRequest(
+				new lib.FactorioVersionsRequest()
+			);
+
+			assert.deepEqual(versions2, versions);
+			assert.equal(callCount, 1);
+
+			// Setting maxAgeMs to 0 should result in a new fetch
+			const versions3 = await controlConnection.handleFactorioVersionsRequest(
+				new lib.FactorioVersionsRequest(0)
+			);
+
+			assert.deepEqual(versions3, versions);
+			assert.equal(callCount, 2);
+		});
+	});
 });