diff --git a/internal/integrationtest/core/core_test.go b/internal/integrationtest/core/core_test.go
index 7b9c4aaedf8..55030c1d316 100644
--- a/internal/integrationtest/core/core_test.go
+++ b/internal/integrationtest/core/core_test.go
@@ -996,15 +996,17 @@ func TestCoreInstallRunsToolPostInstallScript(t *testing.T) {
 	env, cli := integrationtest.CreateArduinoCLIWithEnvironment(t)
 	defer env.CleanUp()
 
-	url := "http://drazzy.com/package_drazzy.com_index.json"
+	url := env.HTTPServeFile(8080, paths.New("testdata", "package_with_postinstall_index.json"))
+	env.HTTPServeFile(8081, paths.New("testdata", "core_with_postinst.zip"))
 
-	_, _, err := cli.Run("core", "update-index", "--additional-urls", url)
+	_, _, err := cli.Run("core", "update-index", "--additional-urls", url.String())
 	require.NoError(t, err)
 
 	// Checks that the post_install script is correctly skipped on the CI
-	stdout, _, err := cli.Run("core", "install", "ATTinyCore:avr", "--verbose", "--additional-urls", url)
+	stdout, _, err := cli.Run("core", "install", "Test:x86", "--additional-urls", url.String())
 	require.NoError(t, err)
 	require.Contains(t, string(stdout), "Skipping tool configuration.")
+	require.Contains(t, string(stdout), "Skipping platform configuration.")
 }
 
 func TestCoreBrokenDependency(t *testing.T) {
diff --git a/internal/integrationtest/core/testdata/core_with_postinst.zip b/internal/integrationtest/core/testdata/core_with_postinst.zip
new file mode 100644
index 00000000000..4855bc84a45
Binary files /dev/null and b/internal/integrationtest/core/testdata/core_with_postinst.zip differ
diff --git a/internal/integrationtest/core/testdata/package_with_postinstall_index.json b/internal/integrationtest/core/testdata/package_with_postinstall_index.json
new file mode 100644
index 00000000000..7521acb12dd
--- /dev/null
+++ b/internal/integrationtest/core/testdata/package_with_postinstall_index.json
@@ -0,0 +1,41 @@
+{
+  "packages": [
+    {
+      "maintainer": "Test",
+      "help": {
+        "online": "https://github.com/Arduino/arduino-cli"
+      },
+      "websiteURL": "https://github.com/Arduino/arduino-cli",
+      "platforms": [
+        {
+          "category": "Test Category",
+          "help": {
+            "online": "https://github.com/Arduino/arduino-cli"
+          },
+          "url": "http://127.0.0.1:8081/core_with_postinst.zip",
+          "checksum": "SHA-256:b08f89eae117254f01215082a2504d94ab28560a7bf944f0b5dcd2772a8f0b7e",
+          "name": "test_core",
+          "version": "2.0.0",
+          "architecture": "x86",
+          "archiveFileName": "core.zip",
+          "size": "828",
+          "toolsDependencies": [
+            {
+              "packager": "arduino",
+              "version": "6.3.0-arduino17",
+              "name": "avrdude"
+            }
+          ],
+          "boards": [
+            {
+              "name": "Test Board"
+            }
+          ]
+        }
+      ],
+      "tools": [],
+      "email": "test@example.com",
+      "name": "test"
+    }
+  ]
+}