diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 21bae7a..0991829 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -8,6 +8,8 @@ jobs:
          fetch-depth: 0
          fetch-tags: true
       - uses: "actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491" # v5.0.0
+        with:
+          go-version-file: go.mod
       - name: test
         run: |
           make lint
diff --git a/.gitignore b/.gitignore
index 5c94511..f38cb90 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,8 @@
 *.out
 .idea
 
+.gocache/
+
 pacttesting/target
 pacttesting/logs
 pact/
diff --git a/.golangci.yml b/.golangci.yml
index a2f1af9..fb6cd5a 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -1,4 +1,4 @@
-# Using golangci-lint@v1.56.2
+# Using golangci-lint@v1.64.8
 run:
   timeout: 5m
   tests: true
diff --git a/Makefile b/Makefile
index 9d1da3c..dba080d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 .DEFAULT_GOAL := default
 
-GOLANGCI_VERSION := 1.56.2
+GOLANGCI_VERSION := 1.64.8
 
 platform := $(shell uname)
 pact_version := "1.88.51"
diff --git a/go.mod b/go.mod
index f999875..89c95b1 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/avast/retry-go/v4 v4.5.1
-	github.com/pact-foundation/pact-go v1.8.0
+	github.com/pact-foundation/pact-go v1.10.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/spf13/viper v1.18.2
 	github.com/stretchr/testify v1.8.4
diff --git a/go.sum b/go.sum
index ef491e8..35ee8b0 100644
--- a/go.sum
+++ b/go.sum
@@ -83,8 +83,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJ
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
-github.com/pact-foundation/pact-go v1.8.0 h1:On9JjJZrzwqmT2UICedWqLpcAtqVyd/ktt0SVJFTdL4=
-github.com/pact-foundation/pact-go v1.8.0/go.mod h1:YLt/uSQGo9x5ZUjynLzNy3IiORlA4BtbR9p2yxgD2as=
+github.com/pact-foundation/pact-go v1.10.0 h1:LE954RwmeV0rSm21umyPGGCvzHkEhglowkNGyuMwNGM=
+github.com/pact-foundation/pact-go v1.10.0/go.mod h1:YLt/uSQGo9x5ZUjynLzNy3IiORlA4BtbR9p2yxgD2as=
 github.com/pelletier/go-toml/v2 v2.1.1 h1:LWAJwfNvjQZCFIDKWYQaM62NcYeYViCmWIwmOStowAI=
 github.com/pelletier/go-toml/v2 v2.1.1/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdUvyaeZurnPPDc=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
diff --git a/pacttesting/message_testing.go b/pacttesting/message_testing.go
index f1e7c96..7068cf4 100644
--- a/pacttesting/message_testing.go
+++ b/pacttesting/message_testing.go
@@ -21,6 +21,14 @@ import (
 
 const providerHTTPScheme = "http://"
 
+const (
+	verificationDirMode       = 0o744
+	verificationFileMode      = 0o600
+	messageReadHeaderTimeout  = 3 * time.Second
+	messageWaitForPortTimeout = 5 * time.Second
+	waitForPortPollInterval   = 50 * time.Millisecond
+)
+
 func VerifyProviderMessagingPacts(params PactProviderTestParams, messageProducers dsl.MessageHandlers) {
 	buildPactClientOnce()
 
@@ -81,9 +89,9 @@ func VerifyProviderMessagingPacts(params PactProviderTestParams, messageProducer
 						err == nil && allTestsSucceeded,
 						version)
 					verificationDir := filepath.Join(topLevelDir, "build", "pact-verifications")
-					_ = os.MkdirAll(verificationDir+"/", 0o744)
+					_ = os.MkdirAll(verificationDir+"/", verificationDirMode)
 					verificationFile := filepath.Join(verificationDir, filename)
-					if err := os.WriteFile(verificationFile, []byte(verificationJSON), 0o600); err != nil {
+					if err := os.WriteFile(verificationFile, []byte(verificationJSON), verificationFileMode); err != nil {
 						t.Fatal(err)
 					}
 					outputJSON, err := json.Marshal(response)
@@ -92,7 +100,7 @@ func VerifyProviderMessagingPacts(params PactProviderTestParams, messageProducer
 					}
 
 					outFile := filepath.Join(topLevelDir, "build/pact-verifications/", "output-"+filename)
-					if err := os.WriteFile(outFile, outputJSON, 0o600); err != nil {
+					if err := os.WriteFile(outFile, outputJSON, verificationFileMode); err != nil {
 						t.Fatal(err)
 					}
 				})
@@ -213,13 +221,13 @@ func VerifyMessageProviderRaw(
 
 	server := http.Server{
 		Handler:           mux,
-		ReadHeaderTimeout: 3 * time.Second,
+		ReadHeaderTimeout: messageReadHeaderTimeout,
 	}
 
 	log.Printf("[DEBUG] API handler starting: port %d (%s)", port, ln.Addr())
 	go func() { _ = server.Serve(ln) }()
 
-	portErr := waitForPort(port, "tcp", getBindAddress(), 5*time.Second,
+	portErr := waitForPort(port, "tcp", getBindAddress(), messageWaitForPortTimeout,
 		fmt.Sprintf(`Timed out waiting for Daemon on port %d - are you sure it's running?`, port))
 
 	if portErr != nil {
@@ -244,7 +252,7 @@ func waitForPort(port int, network string, address string, timeoutDuration time.
 		case <-timeout:
 			log.Printf("[ERROR] Expected server to start < %s. %s", timeoutDuration, message)
 			return fmt.Errorf("expected server to start < %s. %s", timeoutDuration, message)
-		case <-time.After(50 * time.Millisecond):
+		case <-time.After(waitForPortPollInterval):
 			_, err := net.Dial(network, fmt.Sprintf("%s:%d", address, port))
 			if err == nil {
 				return nil
diff --git a/pacttesting/mock_service.go b/pacttesting/mock_service.go
index 858ffa5..4eda9bc 100644
--- a/pacttesting/mock_service.go
+++ b/pacttesting/mock_service.go
@@ -25,6 +25,13 @@ type MockServer struct {
 	Running  bool   `json:"-"`
 }
 
+const (
+	pidDirMode        = 0o755
+	pidFileMode       = 0o600
+	stopRetryAttempts = 25
+	stopRetryDelay    = 200 * time.Millisecond
+)
+
 // call sends a message to the Pact service
 func (m *MockServer) call(method string, url string, content *string) error {
 	client := &http.Client{}
@@ -90,11 +97,11 @@ func (m *MockServer) writePidFile() {
 		return
 	}
 	dir, _ := os.Getwd()
-	_ = os.MkdirAll(filepath.FromSlash(filepath.Join(dir, "pact", "pids")), os.ModePerm)
+	_ = os.MkdirAll(filepath.FromSlash(filepath.Join(dir, "pact", "pids")), pidDirMode)
 	file := filepath.FromSlash(
 		fmt.Sprintf("%s/pact-%s-%s.json", filepath.Join(dir, "pact", "pids"), m.Provider, m.Consumer),
 	)
-	err = os.WriteFile(file, bytes, os.ModePerm)
+	err = os.WriteFile(file, bytes, pidFileMode)
 	if err != nil {
 		log.WithError(err).Errorf("unable to store mock server details")
 		return
@@ -120,7 +127,7 @@ func (m *MockServer) Stop() error {
 				return errors.New("server process is still alive")
 			}
 			return nil
-		}, retry.Attempts(25), retry.Delay(200*time.Millisecond), retry.DelayType(retry.FixedDelay)); err != nil {
+		}, retry.Attempts(stopRetryAttempts), retry.Delay(stopRetryDelay), retry.DelayType(retry.FixedDelay)); err != nil {
 			err = p.Kill()
 			if err != nil {
 				return fmt.Errorf("failed to kill process: %w", err)
diff --git a/pacttesting/pact_file_split.go b/pacttesting/pact_file_split.go
index 6123a5d..661aeb8 100644
--- a/pacttesting/pact_file_split.go
+++ b/pacttesting/pact_file_split.go
@@ -11,6 +11,8 @@ import (
 
 type PactRequestMatchingFilter = func(map[string]interface{})
 
+const splitPactFileMode = 0o644
+
 // SplitPactBulkFile reads bulk PACT files, splits it into smaller ones
 // and writes output to destination directory
 func SplitPactBulkFile(bulkFilePath string, outputDirPath string, requestFilters ...PactRequestMatchingFilter) error {
@@ -51,7 +53,7 @@ func SplitPactBulkFile(bulkFilePath string, outputDirPath string, requestFilters
 
 		description := sanitize(tc.Interactions[0].Description)
 		tcFilePath := filepath.Join(outputDirPath, description+".json")
-		if writeErr := os.WriteFile(tcFilePath, json, os.ModePerm); writeErr != nil {
+		if writeErr := os.WriteFile(tcFilePath, json, splitPactFileMode); writeErr != nil {
 			return fmt.Errorf("couldn't write test case to file - interaction idx: %d , "+
 				"output file path: %s, err: %w", idx, tcFilePath, writeErr)
 		}
diff --git a/pacttesting/pact_testing_integration_stage_test.go b/pacttesting/pact_testing_integration_stage_test.go
index 9816aaf..63a1d04 100644
--- a/pacttesting/pact_testing_integration_stage_test.go
+++ b/pacttesting/pact_testing_integration_stage_test.go
@@ -211,7 +211,7 @@ func (s *pactTestingStage) the_service_gets_preassigned() *pactTestingStage {
 func (s *pactTestingStage) the_service_has_a_preassigned_port() *pactTestingStage {
 	assert.NotEqual(s.t, "", viper.GetString("testservice-pre"))
 	assert.NotNil(s.t, pactServers["testservice-prego-pact-testing"])
-	assert.Greater(s.t, pactServers["testservice-prego-pact-testing"].Port, 0)
+	assert.Positive(s.t, pactServers["testservice-prego-pact-testing"].Port)
 	return s
 }
 
diff --git a/pacttesting/testing.go b/pacttesting/testing.go
index 6cefa21..1177403 100644
--- a/pacttesting/testing.go
+++ b/pacttesting/testing.go
@@ -34,6 +34,15 @@ type pactName struct {
 	Name string `json:"name"`
 }
 
+const (
+	defaultRetryAttempts         = 150000
+	defaultRetryDelay            = 200 * time.Millisecond
+	mockServerHealthAttempts     = 100
+	mockServerHealthDelay        = 100 * time.Millisecond
+	providerVerificationDirMode  = 0o744
+	providerVerificationFileMode = 0o600
+)
+
 //nolint:gochecknoglobals // fixing is a breaking API change
 var (
 	pathOnce    sync.Once
@@ -44,8 +53,8 @@ var (
 
 func defaultRetryOptions() []retry.Option {
 	return []retry.Option{
-		retry.Attempts(150000),
-		retry.Delay(200 * time.Millisecond),
+		retry.Attempts(defaultRetryAttempts),
+		retry.Delay(defaultRetryDelay),
 		retry.DelayType(retry.FixedDelay),
 	}
 }
@@ -163,7 +172,7 @@ func setBinPath() {
 func buildPactClientOnce() {
 	once.Do(func() {
 		setBinPath()
-		pactClient = dsl.NewClient()
+		pactClient = dsl.NewClient("")
 	})
 }
 
@@ -378,7 +387,7 @@ func EnsurePactRunning(provider, consumer string) string {
 				return fmt.Errorf("calling mock server: %w", retry.Unrecoverable(err))
 			}
 			return err
-		}, retry.DelayType(retry.FixedDelay), retry.Delay(100*time.Millisecond), retry.Attempts(100))
+		}, retry.DelayType(retry.FixedDelay), retry.Delay(mockServerHealthDelay), retry.Attempts(mockServerHealthAttempts))
 		if err != nil {
 			log.
 				WithError(err).
@@ -414,7 +423,7 @@ func RunIntegrationTest(t *testing.T, pactFilePaths []Pact, testFunc func(), ret
 		if err := retry.Do(verify, retryOptions...); err != nil {
 			log.Error("Pact verification failed!!" +
 				"For more info on the error check the logs/pact*.log files, they are quite detailed")
-			t.Errorf(err.Error())
+			t.Error(err)
 		}
 	})
 }
@@ -546,9 +555,9 @@ func VerifyProviderPacts(params PactProviderTestParams) {
 						allTestsSucceeded,
 						version)
 					verificationDir := filepath.Join(topLevelDir, "build", "pact-verifications")
-					_ = os.MkdirAll(verificationDir+"/", 0o744)
+					_ = os.MkdirAll(verificationDir+"/", providerVerificationDirMode)
 					verificationFile := filepath.Join(verificationDir, filename)
-					if err := os.WriteFile(verificationFile, []byte(verificationJSON), 0o600); err != nil {
+					if err := os.WriteFile(verificationFile, []byte(verificationJSON), providerVerificationFileMode); err != nil {
 						t.Fatal(err)
 					}
 					outputJSON, err := json.Marshal(response)
@@ -557,7 +566,7 @@ func VerifyProviderPacts(params PactProviderTestParams) {
 					}
 
 					outFile := filepath.Join(topLevelDir, "build/pact-verifications/", "output-"+filename)
-					if err := os.WriteFile(outFile, outputJSON, 0o600); err != nil {
+					if err := os.WriteFile(outFile, outputJSON, providerVerificationFileMode); err != nil {
 						t.Fatal(err)
 					}
 				})
diff --git a/vendor/github.com/pact-foundation/pact-go/client/service.go b/vendor/github.com/pact-foundation/pact-go/client/service.go
index e08ce3b..beffbfa 100644
--- a/vendor/github.com/pact-foundation/pact-go/client/service.go
+++ b/vendor/github.com/pact-foundation/pact-go/client/service.go
@@ -17,7 +17,7 @@ import (
 // Service is a process wrapper for 3rd party binaries. It will spawn an instance
 // of the binary and manage the life-cycle and IO of the process.
 type Service interface {
-	Setup()
+	Setup(pactCLIDir string)
 	Stop(pid int) (bool, error)
 	List() map[int]*exec.Cmd
 	Command() *exec.Cmd
diff --git a/vendor/github.com/pact-foundation/pact-go/client/service_manager.go b/vendor/github.com/pact-foundation/pact-go/client/service_manager.go
index d1dfa66..269094c 100644
--- a/vendor/github.com/pact-foundation/pact-go/client/service_manager.go
+++ b/vendor/github.com/pact-foundation/pact-go/client/service_manager.go
@@ -5,12 +5,14 @@ import (
 	"log"
 	"os"
 	"os/exec"
+	"path"
 	"sync"
 	"time"
 )
 
 // ServiceManager is the default implementation of the Service interface.
 type ServiceManager struct {
+	PactCLIDir 			string
 	Cmd                 string
 	processMap          processMap
 	Args                []string
@@ -20,9 +22,11 @@ type ServiceManager struct {
 }
 
 // Setup the Management services.
-func (s *ServiceManager) Setup() {
+func (s *ServiceManager) Setup(pactCLIDir string) {
 	log.Println("[DEBUG] setting up a service manager")
 
+	s.PactCLIDir = pactCLIDir
+
 	s.commandCreatedChan = make(chan *exec.Cmd)
 	s.commandCompleteChan = make(chan *exec.Cmd)
 	s.processMap = processMap{processes: make(map[int]*exec.Cmd)}
@@ -97,7 +101,7 @@ func (s *ServiceManager) List() map[int]*exec.Cmd {
 
 // Command creates an os command to be run
 func (s *ServiceManager) Command() *exec.Cmd {
-	cmd := exec.Command(s.Cmd, s.Args...)
+	cmd := exec.Command(path.Join(s.PactCLIDir, s.Cmd), s.Args...)
 	env := os.Environ()
 	env = append(env, s.Env...)
 	cmd.Env = env
@@ -108,10 +112,7 @@ func (s *ServiceManager) Command() *exec.Cmd {
 // Start a Service and log its output.
 func (s *ServiceManager) Start() *exec.Cmd {
 	log.Println("[DEBUG] starting service")
-	cmd := exec.Command(s.Cmd, s.Args...)
-	env := os.Environ()
-	env = append(env, s.Env...)
-	cmd.Env = env
+	cmd := s.Command()
 
 	cmdReader, err := cmd.StdoutPipe()
 	if err != nil {
diff --git a/vendor/github.com/pact-foundation/pact-go/dsl/client.go b/vendor/github.com/pact-foundation/pact-go/dsl/client.go
index 5451da7..4342aaa 100644
--- a/vendor/github.com/pact-foundation/pact-go/dsl/client.go
+++ b/vendor/github.com/pact-foundation/pact-go/dsl/client.go
@@ -70,11 +70,11 @@ type PactClient struct {
 }
 
 // newClient creates a new Pact client manager with the provided services
-func newClient(mockServiceManager client.Service, verificationServiceManager client.Service, messageServiceManager client.Service, publishServiceManager client.Service) *PactClient {
-	mockServiceManager.Setup()
-	verificationServiceManager.Setup()
-	messageServiceManager.Setup()
-	publishServiceManager.Setup()
+func newClient(pactCLIDir string, mockServiceManager client.Service, verificationServiceManager client.Service, messageServiceManager client.Service, publishServiceManager client.Service) *PactClient {
+	mockServiceManager.Setup(pactCLIDir)
+	verificationServiceManager.Setup(pactCLIDir)
+	messageServiceManager.Setup(pactCLIDir)
+	publishServiceManager.Setup(pactCLIDir)
 
 	return &PactClient{
 		pactMockSvcManager:     mockServiceManager,
@@ -86,8 +86,8 @@ func newClient(mockServiceManager client.Service, verificationServiceManager cli
 }
 
 // NewClient creates a new Pact client manager with defaults
-func NewClient() *PactClient {
-	return newClient(&client.MockService{}, &client.VerificationService{}, &client.MessageService{}, &client.PublishService{})
+func NewClient(pactCLIDir string) *PactClient {
+	return newClient(pactCLIDir, &client.MockService{}, &client.VerificationService{}, &client.MessageService{}, &client.PublishService{})
 }
 
 // StartServer starts a remote Pact Mock Server.
diff --git a/vendor/github.com/pact-foundation/pact-go/dsl/pact.go b/vendor/github.com/pact-foundation/pact-go/dsl/pact.go
index e14ad5f..756a77f 100644
--- a/vendor/github.com/pact-foundation/pact-go/dsl/pact.go
+++ b/vendor/github.com/pact-foundation/pact-go/dsl/pact.go
@@ -32,6 +32,9 @@ type Pact struct {
 	// Current server for the consumer.
 	Server *types.MockServer
 
+	// Directory of Pactflow standalone CLI (blank if CLI is installed on system)
+	PactCLIDir string
+
 	// Pact RPC Client.
 	pactClient Client
 
@@ -158,7 +161,7 @@ func (p *Pact) Setup(startMockServer bool) *Pact {
 	}
 
 	if p.pactClient == nil {
-		c := NewClient()
+		c := NewClient(p.PactCLIDir)
 		c.TimeoutDuration = p.ClientTimeout
 		p.pactClient = c
 	}
diff --git a/vendor/github.com/pact-foundation/pact-go/dsl/publish.go b/vendor/github.com/pact-foundation/pact-go/dsl/publish.go
index 7847b02..dd74249 100644
--- a/vendor/github.com/pact-foundation/pact-go/dsl/publish.go
+++ b/vendor/github.com/pact-foundation/pact-go/dsl/publish.go
@@ -25,6 +25,9 @@ type PactName struct {
 
 // Publisher is the API to send Pact files to a Pact Broker.
 type Publisher struct {
+	// Directory of Pactflow standalone CLI (blank if CLI is installed on system)
+	PactCLIDir string
+
 	pactClient Client
 
 	// Log levels.
@@ -40,7 +43,7 @@ func (p *Publisher) Publish(request types.PublishRequest) error {
 	log.Println("[DEBUG] pact publisher: publish pact")
 
 	if p.pactClient == nil {
-		c := NewClient()
+		c := NewClient(p.PactCLIDir)
 		p.pactClient = c
 	}
 
diff --git a/vendor/github.com/pact-foundation/pact-go/dsl/service_mock.go b/vendor/github.com/pact-foundation/pact-go/dsl/service_mock.go
index e9d1166..5057860 100644
--- a/vendor/github.com/pact-foundation/pact-go/dsl/service_mock.go
+++ b/vendor/github.com/pact-foundation/pact-go/dsl/service_mock.go
@@ -25,7 +25,7 @@ type ServiceMock struct {
 }
 
 // Setup the Management services.
-func (s *ServiceMock) Setup() {
+func (s *ServiceMock) Setup(pactCLIDir string) {
 	s.ServicesSetupCalled = true
 }
 
diff --git a/vendor/github.com/pact-foundation/pact-go/types/publish_request.go b/vendor/github.com/pact-foundation/pact-go/types/publish_request.go
index b5f41b1..8ea6242 100644
--- a/vendor/github.com/pact-foundation/pact-go/types/publish_request.go
+++ b/vendor/github.com/pact-foundation/pact-go/types/publish_request.go
@@ -29,6 +29,11 @@ type PublishRequest struct {
 	// e.g. "production", "master" and "development" are some common examples.
 	Tags []string
 
+	// Branches are used to identify which pacts a provider should verify using 
+	// consumer version selectors, associating the consumer API version with 
+	// a branch. This supersedes tags. https://docs.pact.io/pact_broker/branches 
+	Branch string
+
 	// Verbose increases verbosity of output
 	// Deprecated
 	Verbose bool
@@ -71,6 +76,10 @@ func (p *PublishRequest) Validate() error {
 		p.Args = append(p.Args, "--broker-token", p.BrokerToken)
 	}
 
+	if p.Branch != "" {
+		p.Args = append(p.Args, "--branch", p.Branch)
+	}
+
 	if p.ConsumerVersion == "" {
 		return fmt.Errorf("'ConsumerVersion' is mandatory")
 	}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 84449b8..1cdc486 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -31,7 +31,7 @@ github.com/magiconair/properties
 # github.com/mitchellh/mapstructure v1.5.0
 ## explicit; go 1.14
 github.com/mitchellh/mapstructure
-# github.com/pact-foundation/pact-go v1.8.0
+# github.com/pact-foundation/pact-go v1.10.0
 ## explicit; go 1.12
 github.com/pact-foundation/pact-go/client
 github.com/pact-foundation/pact-go/dsl