diff --git a/source/dub/commandline.d b/source/dub/commandline.d
index 258f710..8e1da35 100644
--- a/source/dub/commandline.d
+++ b/source/dub/commandline.d
@@ -371,6 +371,8 @@
 			logDiagnostic("Checking for upgrades.");
 			dub.upgrade(UpdateOptions.upgrade|UpdateOptions.printUpgradesOnly);
 		}
+
+		dub.project.validate();
 	}
 
 	private bool loadSpecificPackage(Dub dub, string package_name)
diff --git a/source/dub/project.d b/source/dub/project.d
index 038f0e4..1d54962 100644
--- a/source/dub/project.d
+++ b/source/dub/project.d
@@ -163,12 +163,8 @@
 		return cfgs[m_rootPackage.name];
 	}
 
-	/// Rereads the applications state.
-	void reinit()
+	void validate()
 	{
-		m_dependencies = null;
-		m_packageManager.refresh(false);
-
 		// some basic package lint
 		m_rootPackage.warnOnSpecialCompilerFlags();
 		if (m_rootPackage.name != m_rootPackage.name.toLower()) {
@@ -186,6 +182,13 @@
 					~ "dependency to use a branch instead.",
 					dn, SelectedVersions.defaultFile);
 			}
+	}
+
+	/// Rereads the applications state.
+	void reinit()
+	{
+		m_dependencies = null;
+		m_packageManager.refresh(false);
 
 		void collectDependenciesRec(Package pack)
 		{