diff --git a/spec/docker_via_api_spec.rb b/spec/docker_via_api_spec.rb
index 16be17f2..50f11a87 100644
--- a/spec/docker_via_api_spec.rb
+++ b/spec/docker_via_api_spec.rb
@@ -13,14 +13,14 @@
 
     it 'lists processes' do
       expect(Excon).to receive(:get).
-                       with(excon_uri + 'v1.12/containers/json', {}).
+                       with(excon_uri + "v1.12" + "/containers/json", {}).
                        and_return(double(body: json_string, status: 200))
       expect(api.ps).to eq(json_value)
     end
 
     it 'lists all processes' do
       expect(Excon).to receive(:get).
-                       with(excon_uri + 'v1.12/containers/json?all=1', {}).
+                       with(excon_uri + "v1.12" + "/containers/json?all=1", {}).
                        and_return(double(body: json_string, status: 200))
       expect(api.ps(all: true)).to eq(json_value)
     end
@@ -62,14 +62,14 @@
 
     it 'stops a container' do
       expect(Excon).to receive(:post).
-                       with(excon_uri + 'v1.12/containers/12345/stop?t=300', {}).
+                       with(excon_uri + "v1.12" + "/containers/12345/stop?t=300", {}).
                        and_return(double(status: 204))
       api.stop_container('12345', 300)
     end
 
     it 'stops a container with a custom timeout' do
       expect(Excon).to receive(:post).
-                       with(excon_uri + 'v1.12/containers/12345/stop?t=30', {}).
+                       with(excon_uri + "v1.12" + "/containers/12345/stop?t=30", {}).
                        and_return(double(status: 204))
       api.stop_container('12345')
     end
@@ -90,14 +90,14 @@
 
     it 'inspects a container' do
       expect(Excon).to receive(:get).
-                           with(excon_uri + 'v1.12/containers/12345/json', {}).
+                           with(excon_uri + "v1.12" + "/containers/12345/json", {}).
                            and_return(double(body: json_string, status: 200))
       expect(api.inspect_container('12345')).to eq(json_value)
     end
 
     it 'removes a container' do
       expect(Excon).to receive(:delete).
-                           with(excon_uri + 'v1.12/containers/12345', {}).
+                           with(excon_uri + "v1.12" + "/containers/12345", {}).
                            and_return(double(status: 204))
       expect(api.remove_container('12345')).to eq(true)
     end
@@ -120,7 +120,7 @@
 
     it 'lists processes' do
       expect(Excon).to receive(:get).
-                       with(excon_uri + 'v1.12/containers/json',
+                       with(excon_uri + "v1.12" + "/containers/json",
                             client_cert: '/certs/cert.pem',
                             client_key: '/certs/key.pem').
                        and_return(double(body: json_string, status: 200))
@@ -129,7 +129,7 @@
 
     it 'lists all processes' do
       expect(Excon).to receive(:get).
-                       with(excon_uri + 'v1.12/containers/json?all=1',
+                       with(excon_uri + "v1.12" + "/containers/json?all=1",
                             client_cert: '/certs/cert.pem',
                             client_key: '/certs/key.pem').
                        and_return(double(body: json_string, status: 200))
@@ -138,7 +138,7 @@
 
     it 'inspects an image' do
       expect(Excon).to receive(:get).
-                       with(excon_uri + 'v1.12/images/foo:bar/json',
+                       with(excon_uri + "v1.12" + "/images/foo:bar/json",
                             client_cert: '/certs/cert.pem',
                             client_key: '/certs/key.pem',
                             headers: {'Accept' => 'application/json'}).
@@ -150,7 +150,7 @@
       configuration_as_json = double
       configuration = double(to_json: configuration_as_json)
       expect(Excon).to receive(:post).
-                           with(excon_uri + 'v1.12/containers/create',
+                           with(excon_uri + "v1.12" + "/containers/create",
                                 client_cert: '/certs/cert.pem',
                                 client_key: '/certs/key.pem',
                                 query: nil,
@@ -164,7 +164,7 @@
       configuration_as_json = double
       configuration = double(to_json: configuration_as_json)
       expect(Excon).to receive(:post).
-                           with(excon_uri + 'v1.12/containers/12345/start',
+                           with(excon_uri + "v1.12" + "/containers/12345/start",
                                 client_cert: '/certs/cert.pem',
                                 client_key: '/certs/key.pem',
                                 body: configuration_as_json,
@@ -175,7 +175,7 @@
 
     it 'stops a container' do
       expect(Excon).to receive(:post).
-                       with(excon_uri + 'v1.12/containers/12345/stop?t=300',
+                       with(excon_uri + "v1.12" + "/containers/12345/stop?t=300",
                             client_cert: '/certs/cert.pem',
                             client_key: '/certs/key.pem').
                        and_return(double(status: 204))
@@ -184,7 +184,7 @@
 
     it 'stops a container with a custom timeout' do
       expect(Excon).to receive(:post).
-                       with(excon_uri + 'v1.12/containers/12345/stop?t=30',
+                       with(excon_uri + "v1.12" + "/containers/12345/stop?t=30",
                             client_cert: '/certs/cert.pem',
                             client_key: '/certs/key.pem').
                        and_return(double(status: 204))
@@ -211,7 +211,7 @@
 
     it 'inspects a container' do
       expect(Excon).to receive(:get).
-                           with(excon_uri + 'v1.12/containers/12345/json',
+                           with(excon_uri + "v1.12" + "/containers/12345/json",
                                 client_cert: '/certs/cert.pem',
                                 client_key: '/certs/key.pem').
                            and_return(double(body: json_string, status: 200))
@@ -220,7 +220,7 @@
 
     it 'removes a container' do
       expect(Excon).to receive(:delete).
-                           with(excon_uri + 'v1.12/containers/12345',
+                           with(excon_uri + "v1.12" + "/containers/12345",
                                 client_cert: '/certs/cert.pem',
                                 client_key: '/certs/key.pem').
                            and_return(double(status: 204))
@@ -235,7 +235,7 @@
 
     it 'lists processes' do
       expect(Excon).to receive(:get).
-                       with(excon_uri + 'v1.12/containers/json',
+                       with(excon_uri + "v1.12" + "/containers/json",
                             client_cert: File.expand_path('~/.docker/cert.pem'),
                             client_key: File.expand_path('~/.docker/key.pem')).
                        and_return(double(body: json_string, status: 200))