diff --git a/phpmon/Domain/App/Startup.swift b/phpmon/Domain/App/Startup.swift
index 35ac141c..fd2670b4 100644
--- a/phpmon/Domain/App/Startup.swift
+++ b/phpmon/Domain/App/Startup.swift
@@ -201,23 +201,26 @@ class Startup {
         // =================================================================================
         // Determine that Valet works correctly (no issues in platform detected)
         // =================================================================================
+        /*
         EnvironmentCheck(
             command: {
-                let output = valet("--version", sudo: false)
-                return output.contains("Composer detected issues in your platform")
+                return valet("--version", sudo: false)
+                    .contains("Composer detected issues in your platform")
             },
             name: "`no global composer issues",
             titleText: "startup.errors.global_composer_platform_issues.title".localized,
             subtitleText: "startup.errors.global_composer_platform_issues.subtitle".localized,
             descriptionText: "startup.errors.global_composer_platform_issues.desc".localized
         ),
+        */
         // =================================================================================
         // Determine the Valet version and ensure it isn't unknown.
         // =================================================================================
         EnvironmentCheck(
             command: {
-                Valet.shared.version = VersionExtractor.from(valet("--version", sudo: false))
-                return Valet.shared.version == nil
+                let output = valet("--version", sudo: false)
+                Valet.shared.version = VersionExtractor.from(output)
+                return Valet.shared.version == nil && output.contains("Laravel Valet")
             },
             name: "`valet --version` was loaded",
             titleText: "startup.errors.valet_version_unknown.title".localized,
diff --git a/phpmon/Domain/Integrations/Valet/Valet.swift b/phpmon/Domain/Integrations/Valet/Valet.swift
index 172dded2..6aaafeab 100644
--- a/phpmon/Domain/Integrations/Valet/Valet.swift
+++ b/phpmon/Domain/Integrations/Valet/Valet.swift
@@ -183,6 +183,11 @@ class Valet {
         }
     }
 
+    public func hasPlatformIssues() -> Bool {
+        return valet("--version", sudo: false)
+            .contains("Composer detected issues in your platform")
+    }
+
     /**
      Returns a count of how many sites are linked and parked.
      */
diff --git a/phpmon/Domain/Menu/MainMenu+Switcher.swift b/phpmon/Domain/Menu/MainMenu+Switcher.swift
index 2f412492..6680d2d4 100644
--- a/phpmon/Domain/Menu/MainMenu+Switcher.swift
+++ b/phpmon/Domain/Menu/MainMenu+Switcher.swift
@@ -39,11 +39,16 @@ extension MainMenu {
                         self.notifyAboutVersionChange(to: version)
                     }
                 )
-
             } else {
                 self.notifyAboutVersionChange(to: version)
             }
 
+            // Check if Valet still works correctly
+            if Valet.shared.hasPlatformIssues() {
+                Log.info("Composer platform issue(s) detected.")
+                self.suggestFixMyComposer()
+            }
+
             // Update stats
             Stats.incrementSuccessfulSwitchCount()
             Stats.evaluateSponsorMessageShouldBeDisplayed()
@@ -65,6 +70,24 @@ extension MainMenu {
         }
     }
 
+    private func suggestFixMyComposer() {
+        BetterAlert().withInformation(
+            title: "alert.global_composer_platform_issues.title".localized,
+            subtitle: "alert.global_composer_platform_issues.subtitle".localized,
+            description: "alert.global_composer_platform_issues.desc".localized
+        )
+        .withPrimary(text: "alert.global_composer_platform_issues.buttons.update".localized, action: { alert in
+            alert.close(with: .OK)
+            self.updateGlobalComposerDependencies()
+        })
+        .withSecondary(text: "", action: nil)
+        .withTertiary(text: "alert.global_composer_platform_issues.buttons.quit".localized, action: { alert in
+            alert.close(with: .OK)
+            self.terminateApp()
+        })
+        .show()
+    }
+
     private func reloadDomainListData() {
         if let window = App.shared.domainListWindowController {
             DispatchQueue.main.async {
diff --git a/phpmon/Localizable.strings b/phpmon/Localizable.strings
index 8a25c45d..8b3738c6 100644
--- a/phpmon/Localizable.strings
+++ b/phpmon/Localizable.strings
@@ -388,6 +388,13 @@ You can do this by running `composer global update` in your terminal. After that
 "alert.php_switch_unavailable.info" = "Please make sure PHP %@ is installed and you can switch to it in the dropdown. Currently supported versions include PHP: %@.";
 "alert.php_switch_unavailable.ok" = "OK";
 
+// Composer issues
+"alert.global_composer_platform_issues.title" = "Composer detected issues in your platform";
+"alert.global_composer_platform_issues.subtitle" = "The version of PHP you switched to is too old for the global Composer dependencies you have installed. These dependencies will need to be updated.";
+"alert.global_composer_platform_issues.desc" = "The easiest way to prevent this issue from occurring in the future is to switch to the oldest PHP version you have installed and to run `composer global update` again. \n\nAlternatively, you can choose the 'Automatically update global dependencies' option in Preferences to avoid this issue as well.";
+"alert.global_composer_platform_issues.buttons.update" = "Update Global Dependencies";
+"alert.global_composer_platform_issues.buttons.quit" = "Quit PHP Monitor";
+
 // Revert
 "alert.revert_description.title" = "Revert Configuration?";
 "alert.revert_description.subtitle" = "PHP Monitor can revert to the previous configuration that was active. Here's what will be applied: \n\n%@";