diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7387e58..82f0cc9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 Changelog
 =========
 
+v1.5.0 - 2017-
+-------------------
+
+- Read additional registry URLs (semicolon separated) from DUB_REGISTRY env var - [pull #1173][issue1173]
+
+[issue1173]: https://github.com/dlang/dub/issues/1173
+
 v1.4.0 - 2017-
 -------------------
 
diff --git a/source/dub/dub.d b/source/dub/dub.d
index 32c84bf..3e4802b 100644
--- a/source/dub/dub.d
+++ b/source/dub/dub.d
@@ -133,9 +133,11 @@
 		PackageSupplier[] ps = additional_package_suppliers;
 
 		if (skip_registry < SkipPackageSuppliers.all)
-			ps ~= m_config.registryURLs
+		{
+			ps ~= (environment.get("DUB_REGISTRY", null).split(";") ~ m_config.registryURLs)
 				.map!(url => cast(PackageSupplier)new RegistryPackageSupplier(URL(url)))
 				.array;
+		}
 
 		if (skip_registry < SkipPackageSuppliers.standard)
 			ps ~= defaultPackageSuppliers();
@@ -145,6 +147,22 @@
 		updatePackageSearchPath();
 	}
 
+	unittest
+	{
+		scope (exit) environment.remove("DUB_REGISTRY");
+		auto dub = new Dub(".", null, SkipPackageSuppliers.standard);
+		assert(dub.m_packageSuppliers.length == 0);
+		environment["DUB_REGISTRY"] = "http://example.com/";
+		dub = new Dub(".", null, SkipPackageSuppliers.standard);
+		logInfo("%s", dub.m_packageSuppliers);
+		assert(dub.m_packageSuppliers.length == 1);
+		environment["DUB_REGISTRY"] = "http://example.com/;http://foo.com/";
+		dub = new Dub(".", null, SkipPackageSuppliers.standard);
+		assert(dub.m_packageSuppliers.length == 2);
+		dub = new Dub(".", [new RegistryPackageSupplier(URL("http://bar.com/"))], SkipPackageSuppliers.standard);
+		assert(dub.m_packageSuppliers.length == 3);
+	}
+
 	/** Initializes the instance with a single package search path, without
 		loading a package.