diff --git a/bootstrap.js b/bootstrap.js
index e9b63de5..0204420c 100644
--- a/bootstrap.js
+++ b/bootstrap.js
@@ -1 +1 @@
-require('./dist/index').bootstrap({});
+require('./dist/index').bootstrap();
diff --git a/src/routines/bootstrap.js b/src/routines/bootstrap.js
index 7383165d..88a0b5ba 100644
--- a/src/routines/bootstrap.js
+++ b/src/routines/bootstrap.js
@@ -29,6 +29,10 @@ type ConfigurationType = {|
   +environmentVariableNamespace: string
 |};
 
+const defaultConfigurationInput = {
+  environmentVariableNamespace: undefined
+};
+
 const log = Logger.child({
   namespace: 'bootstrap'
 });
@@ -43,7 +47,7 @@ const createConfiguration = (configurationInput: ConfigurationInputType): Config
   };
 };
 
-export default (configurationInput: ConfigurationInputType) => {
+export default (configurationInput: ConfigurationInputType = defaultConfigurationInput) => {
   const configuration = createConfiguration(configurationInput);
 
   global.GLOBAL_AGENT = global.GLOBAL_AGENT || createGlobalAgentGlobal();
diff --git a/test/global-agent/routines/bootstrap.js b/test/global-agent/routines/bootstrap.js
index c318d9b1..e2594515 100644
--- a/test/global-agent/routines/bootstrap.js
+++ b/test/global-agent/routines/bootstrap.js
@@ -151,7 +151,7 @@ const createHttpServer = async () => {
 };
 
 test('proxies HTTP request', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -165,7 +165,7 @@ test('proxies HTTP request', async (t) => {
 });
 
 test('proxies HTTPS request', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -179,7 +179,7 @@ test('proxies HTTPS request', async (t) => {
 });
 
 test('does not produce unhandled rejection when cannot connect to proxy', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const port = await getNextPort();
 
@@ -189,7 +189,7 @@ test('does not produce unhandled rejection when cannot connect to proxy', async
 });
 
 test('proxies HTTPS request with dedicated proxy', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -203,7 +203,7 @@ test('proxies HTTPS request with dedicated proxy', async (t) => {
 });
 
 test('ignores dedicated HTTPS proxy for HTTP urls', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -218,7 +218,7 @@ test('ignores dedicated HTTPS proxy for HTTP urls', async (t) => {
 });
 
 test('forwards requests matching NO_PROXY', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
   const httpServer = await createHttpServer();
@@ -234,7 +234,7 @@ test('forwards requests matching NO_PROXY', async (t) => {
 });
 
 test('proxies HTTP request (using http.get(host))', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -250,7 +250,7 @@ test('proxies HTTP request (using http.get(host))', async (t) => {
 });
 
 test('proxies HTTP request (using got)', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -262,7 +262,7 @@ test('proxies HTTP request (using got)', async (t) => {
 });
 
 test('proxies HTTPS request (using got)', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -274,7 +274,7 @@ test('proxies HTTPS request (using got)', async (t) => {
 });
 
 test('proxies HTTP request (using axios)', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -286,7 +286,7 @@ test('proxies HTTP request (using axios)', async (t) => {
 });
 
 test('proxies HTTPS request (using axios)', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -298,7 +298,7 @@ test('proxies HTTPS request (using axios)', async (t) => {
 });
 
 test('proxies HTTP request (using request)', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();
 
@@ -316,7 +316,7 @@ test('proxies HTTP request (using request)', async (t) => {
 });
 
 test('proxies HTTPS request (using request)', async (t) => {
-  bootstrap({});
+  bootstrap();
 
   const proxyServer = await createProxyServer();