diff --git a/source/dub/dependency.d b/source/dub/dependency.d
index fc444e0..ddadb84 100644
--- a/source/dub/dependency.d
+++ b/source/dub/dependency.d
@@ -99,6 +99,12 @@
 		this.spec = s;
 	}
 
+	int opCmp(in typeof(this) other) @safe const {
+		return name == other.name
+			? spec.opCmp(other.spec)
+			: name.opCmp(other.name);
+	}
+
 	/// Name of the referenced package.
 	PackageName name;
 
diff --git a/source/dub/package_.d b/source/dub/package_.d
index 94d2597..9b25558 100644
--- a/source/dub/package_.d
+++ b/source/dub/package_.d
@@ -573,13 +573,18 @@
 	// Left as package until the final API for this has been found
 	package auto getAllDependenciesRange()
 	const {
+		import std.algorithm: sort, uniq;
+		import std.array: array;
 		return
 			chain(
 				only(this.recipe.buildSettings.dependencies.byKeyValue),
 				this.recipe.configurations.map!(c => c.buildSettings.dependencies.byKeyValue)
 			)
 			.joiner()
-			.map!(d => PackageDependency(PackageName(d.key), d.value));
+			.map!(d => PackageDependency(PackageName(d.key), d.value))
+			.array
+			.sort
+			.uniq;
 	}