diff --git a/internal/testhelpers/tagsuite/tagsuite.go b/internal/testhelpers/tagsuite/tagsuite.go
index 04fd9c4a5d..1c04bd3b53 100644
--- a/internal/testhelpers/tagsuite/tagsuite.go
+++ b/internal/testhelpers/tagsuite/tagsuite.go
@@ -2,6 +2,7 @@ package tagsuite
 
 import (
 	"os"
+	"runtime"
 	"strings"
 
 	"github.com/thoas/go-funk"
@@ -95,8 +96,30 @@ type Suite struct {
 	suite.Suite
 }
 
+// ARM-supported tags for integration tests
+var armSupportedTags = []string{
+	Install,
+	Installer,
+	InstallScripts,
+	Update,
+}
+
 // OnlyRunForTags skips a test unless one of the given tags is asked for.
 func (suite *Suite) OnlyRunForTags(tags ...string) {
+	// Skip tests on ARM64 if they don't have an ARM-supported tag
+	if runtime.GOOS == "linux" && runtime.GOARCH == "arm64" {
+		hasArmSupportedTag := false
+		for _, tag := range tags {
+			if funk.Contains(armSupportedTags, tag) {
+				hasArmSupportedTag = true
+				break
+			}
+		}
+		if !hasArmSupportedTag {
+			suite.T().Skipf("Skipping test on Linux/arm64 - only tags %s are supported", strings.Join(armSupportedTags, ", "))
+		}
+	}
+
 	setTagsString, _ := os.LookupEnv("TEST_SUITE_TAGS")
 
 	setTags := strings.Split(strings.ToLower(setTagsString), ":")
diff --git a/pkg/projectfile/projectfile.go b/pkg/projectfile/projectfile.go
index 128e01d95a..85c01c3d18 100644
--- a/pkg/projectfile/projectfile.go
+++ b/pkg/projectfile/projectfile.go
@@ -1130,7 +1130,8 @@ func AddLockInfo(projectFilePath, branch, version string) error {
 
 	projectRegex := regexp.MustCompile(fmt.Sprintf("(?m:(^project:\\s*%s))", ProjectURLRe))
 	lockString := fmt.Sprintf("%s@%s", branch, version)
-	lockUpdate := []byte(fmt.Sprintf(`${1}\nlock: %s`, lockString))
+	lockUpdate := fmt.Append(nil, `${1}`)
+	lockUpdate = append(lockUpdate, []byte(fmt.Sprintf("lock: %s", lockString))...)
 
 	data, err = os.ReadFile(projectFilePath)
 	if err != nil {
diff --git a/test/integration/deploy_int_test.go b/test/integration/deploy_int_test.go
index f51e686baa..348893af42 100644
--- a/test/integration/deploy_int_test.go
+++ b/test/integration/deploy_int_test.go
@@ -12,7 +12,6 @@ import (
 
 	"github.com/ActiveState/cli/internal/testhelpers/suite"
 
-	"github.com/ActiveState/cli/internal/config"
 	"github.com/ActiveState/cli/internal/constants"
 	"github.com/ActiveState/cli/internal/fileutils"
 	"github.com/ActiveState/cli/internal/subshell"
@@ -205,7 +204,9 @@ func (suite *DeployIntegrationTestSuite) TestDeployPython() {
 	cp.SendLine("exit")
 	cp.ExpectExitCode(0)
 
-	suite.AssertConfig(ts, targetID.String())
+	ts.WithEnv(func() {
+		suite.AssertConfig(ts, targetID.String())
+	})
 }
 
 func (suite *DeployIntegrationTestSuite) TestDeployInstall() {
@@ -290,17 +291,17 @@ func (suite *DeployIntegrationTestSuite) TestDeployConfigure() {
 func (suite *DeployIntegrationTestSuite) AssertConfig(ts *e2e.Session, targetID string) {
 	if runtime.GOOS != "windows" {
 		// Test config file
-		cfg, err := config.New()
-		suite.Require().NoError(err)
 
-		subshell := subshell.New(cfg)
-		rcFile, err := subshell.RcFile()
-		suite.Require().NoError(err)
+		ts.WithEnv(func() {
+			subshell := subshell.New(ts.Config())
+			rcFile, err := subshell.RcFile()
+			suite.Require().NoError(err)
 
-		bashContents := fileutils.ReadFileUnsafe(rcFile)
-		suite.Contains(string(bashContents), constants.RCAppendDeployStartLine, "config file should contain our RC Append Start line")
-		suite.Contains(string(bashContents), constants.RCAppendDeployStopLine, "config file should contain our RC Append Stop line")
-		suite.Contains(string(bashContents), targetID, "config file should contain our target dir")
+			bashContents := fileutils.ReadFileUnsafe(rcFile)
+			suite.Contains(string(bashContents), constants.RCAppendDeployStartLine, "config file should contain our RC Append Start line")
+			suite.Contains(string(bashContents), constants.RCAppendDeployStopLine, "config file should contain our RC Append Stop line")
+			suite.Contains(string(bashContents), targetID, "config file should contain our target dir")
+		})
 	} else {
 		// Test registry
 		out, err := exec.Command("reg", "query", `HKLM\SYSTEM\ControlSet001\Control\Session Manager\Environment`, "/v", "Path").Output()
diff --git a/test/integration/use_int_test.go b/test/integration/use_int_test.go
index d9b781eaab..64a46ec299 100644
--- a/test/integration/use_int_test.go
+++ b/test/integration/use_int_test.go
@@ -124,13 +124,16 @@ func (suite *UseIntegrationTestSuite) TestReset() {
 	python3Exe := filepath.Join(ts.Dirs.DefaultBin, "python3"+osutils.ExeExtension)
 	suite.True(fileutils.TargetExists(python3Exe), python3Exe+" not found")
 
-	cfg, err := config.New()
-	suite.NoError(err)
-	rcfile, err := subshell.New(cfg).RcFile()
-	if runtime.GOOS != "windows" && fileutils.FileExists(rcfile) {
+	var rcfile string
+	ts.WithEnv(func() {
+		cfg, err := config.New()
 		suite.NoError(err)
-		suite.Contains(string(fileutils.ReadFileUnsafe(rcfile)), ts.Dirs.DefaultBin, "PATH does not have your project in it")
-	}
+		rcfile, err := subshell.New(cfg).RcFile()
+		if runtime.GOOS != "windows" && fileutils.FileExists(rcfile) {
+			suite.NoError(err)
+			suite.Contains(string(fileutils.ReadFileUnsafe(rcfile)), ts.Dirs.DefaultBin, "PATH does not have your project in it")
+		}
+	})
 
 	cp = ts.Spawn("use", "reset")
 	cp.Expect("Continue?")
@@ -233,6 +236,7 @@ func (suite *UseIntegrationTestSuite) TestSetupNotice() {
 
 func (suite *UseIntegrationTestSuite) TestJSON() {
 	suite.OnlyRunForTags(tagsuite.Use, tagsuite.JSON)
+
 	ts := e2e.New(suite.T(), false)
 	defer ts.Close()