diff --git a/build/tests/integration/lib/adapterSetup.js b/build/tests/integration/lib/adapterSetup.js
index b5c4317..a5069c6 100644
--- a/build/tests/integration/lib/adapterSetup.js
+++ b/build/tests/integration/lib/adapterSetup.js
@@ -76,6 +76,19 @@ class AdapterSetup {
         const tarballPath = path.resolve(this.adapterDir, tarballName);
         await (0, fs_extra_1.copy)(tarballPath, path.resolve(this.testDir, tarballName));
         await (0, fs_extra_1.unlink)(tarballPath);
+        // Let npm remove the adapter in the package-lock.json file(s),
+        // so that the installation in the following step
+        // won't grab the cached files.
+        // See https://github.com/ioBroker/testing/issues/612
+        debug("Removing the adapter from package-lock.json");
+        await (0, executeCommand_1.executeCommand)("npm", [
+            "uninstall",
+            this.adapterFullName,
+            "--package-lock-only",
+            "--omit=dev",
+        ], {
+            cwd: this.testDir,
+        });
         // Complete the package.json, so npm can do it's magic
         debug("Saving the adapter in package.json");
         const packageJsonPath = path.join(this.testDir, "package.json");
@@ -93,7 +106,7 @@ class AdapterSetup {
             await (0, fs_extra_1.remove)(this.testAdapterDir);
         debug("Installing adapter");
         // Defer to npm to install the controller (if it wasn't already)
-        await (0, executeCommand_1.executeCommand)("npm", ["i", "--production"], {
+        await (0, executeCommand_1.executeCommand)("npm", ["i", "--omit=dev"], {
             cwd: this.testDir,
         });
         debug("  => done!");
diff --git a/build/tests/integration/lib/controllerSetup.js b/build/tests/integration/lib/controllerSetup.js
index 399b788..be0f953 100644
--- a/build/tests/integration/lib/controllerSetup.js
+++ b/build/tests/integration/lib/controllerSetup.js
@@ -89,7 +89,7 @@ class ControllerSetup {
         const wasJsControllerInstalled = await this.isJsControllerInstalled();
         // Defer to npm to install the controller (if it wasn't already)
         debug("(Re-)installing JS Controller...");
-        await (0, executeCommand_1.executeCommand)("npm", ["i", "--production"], {
+        await (0, executeCommand_1.executeCommand)("npm", ["i", "--omit=dev"], {
             cwd: this.testDir,
         });
         // Prepare/clean the databases and config
diff --git a/build/tests/packageFiles/index.js b/build/tests/packageFiles/index.js
index 043ae4e..6ade9a8 100644
--- a/build/tests/packageFiles/index.js
+++ b/build/tests/packageFiles/index.js
@@ -206,11 +206,12 @@ function validatePackageFiles(adapterDir) {
                 iopackContent.common.noConfig === "true" ||
                 iopackContent.common.adminUI?.config === "none";
             if (!hasNoConfigPage) {
-                it("The adapter uses Material UI or JSON Config for the admin UI", () => {
+                it("The adapter uses a supported admin UI", () => {
                     const hasSupportedUI = !!iopackContent.common.materialize ||
+                        iopackContent.common.adminUI?.config === "html" ||
                         iopackContent.common.adminUI?.config === "json" ||
                         iopackContent.common.adminUI?.config === "materialize";
-                    (0, chai_1.expect)(hasSupportedUI, "Unsupported Admin UI, must be materialize or json config!").to.be.true;
+                    (0, chai_1.expect)(hasSupportedUI, "Unsupported Admin UI, must be html, materialize or JSON config!").to.be.true;
                 });
             }
         });
diff --git a/src/tests/integration/lib/adapterSetup.ts b/src/tests/integration/lib/adapterSetup.ts
index 49b99d9..21b8d7a 100644
--- a/src/tests/integration/lib/adapterSetup.ts
+++ b/src/tests/integration/lib/adapterSetup.ts
@@ -79,6 +79,24 @@ export class AdapterSetup {
 		await copy(tarballPath, path.resolve(this.testDir, tarballName));
 		await unlink(tarballPath);
 
+		// Let npm remove the adapter in the package-lock.json file(s),
+		// so that the installation in the following step
+		// won't grab the cached files.
+		// See https://github.com/ioBroker/testing/issues/612
+		debug("Removing the adapter from package-lock.json");
+		await executeCommand(
+			"npm",
+			[
+				"uninstall",
+				this.adapterFullName,
+				"--package-lock-only",
+				"--omit=dev",
+			],
+			{
+				cwd: this.testDir,
+			},
+		);
+
 		// Complete the package.json, so npm can do it's magic
 		debug("Saving the adapter in package.json");
 		const packageJsonPath = path.join(this.testDir, "package.json");
@@ -101,7 +119,7 @@ export class AdapterSetup {
 
 		debug("Installing adapter");
 		// Defer to npm to install the controller (if it wasn't already)
-		await executeCommand("npm", ["i", "--production"], {
+		await executeCommand("npm", ["i", "--omit=dev"], {
 			cwd: this.testDir,
 		});
 
diff --git a/src/tests/integration/lib/controllerSetup.ts b/src/tests/integration/lib/controllerSetup.ts
index 4789a36..adc85ee 100644
--- a/src/tests/integration/lib/controllerSetup.ts
+++ b/src/tests/integration/lib/controllerSetup.ts
@@ -100,7 +100,7 @@ export class ControllerSetup {
 		const wasJsControllerInstalled = await this.isJsControllerInstalled();
 		// Defer to npm to install the controller (if it wasn't already)
 		debug("(Re-)installing JS Controller...");
-		await executeCommand("npm", ["i", "--production"], {
+		await executeCommand("npm", ["i", "--omit=dev"], {
 			cwd: this.testDir,
 		});
 		// Prepare/clean the databases and config