diff --git a/command/changeport-cmd.go b/command/changeport-cmd.go
new file mode 100644
index 0000000..2385baf
--- /dev/null
+++ b/command/changeport-cmd.go
@@ -0,0 +1,15 @@
+package command
+
+func (i *Command) RunChangePort() error {
+	return i.runSteps(
+		i.CryosparcmChangePortStep(
+			i.cfg.HostName,
+			i.cfg.CryosparcPath,
+			i.cfg.BasePort,
+			portStart,
+			portEnd,
+			portCount,
+			i.cfg.CryosparcmHelp,
+		),
+	)
+}
diff --git a/command/install-cmd.go b/command/install-cmd.go
index aaefcdd..8325a23 100644
--- a/command/install-cmd.go
+++ b/command/install-cmd.go
@@ -10,8 +10,8 @@ import (
 )
 
 var (
-	portStart uint = 39400 // Start port range to assign new base port
-	portEnd   uint = 40000 // End port range to assign new base port
+	portStart uint = 61000 // Start port range to assign new base port
+	portEnd   uint = 62000 // End port range to assign new base port
 	portCount uint = 10    // Number of contiguous ports available
 )
 
diff --git a/command/steps.go b/command/steps.go
index 663e45d..083b088 100644
--- a/command/steps.go
+++ b/command/steps.go
@@ -76,7 +76,6 @@ func (i *Command) CryosparcmCreateUserStep(
 		Message:          fmt.Sprintf("Creating CryoSPARC user (instance: %s)", cryosparcpath),
 		CompletedMessage: nil,
 		Condition: func() (bool, error) {
-
 			return true, nil
 		},
 		Prompt: func() *huh.Form {
@@ -163,6 +162,33 @@ func (i *Command) CryosparcmCreateUserStep(
 	}
 }
 
+func (i *Command) CryosparcmChangePortStep(
+	hostname,
+	cryosparcpath string,
+	port, start, end, count uint,
+	help bool) ui.Step {
+
+	return ui.Step{
+		Message:          fmt.Sprintf("Changing base port (instance: %s)", cryosparcpath),
+		CompletedMessage: nil,
+		Exec: func() *exec.Cmd {
+
+			if port == 0 {
+				i.setCryosparcBasePort(hostname, start, end, count)
+			}
+
+			return cryosparcmCmd(
+				hostname,
+				cryosparcpath,
+				"",
+				help,
+				"changeport",
+				strconv.FormatUint(uint64(i.cfg.BasePort), 10),
+			)
+		},
+	}
+}
+
 // =============================================================================
 // cryosparcm commands Steps
 // =============================================================================
diff --git a/main.go b/main.go
index fc4f226..ffb784e 100644
--- a/main.go
+++ b/main.go
@@ -93,6 +93,13 @@ func main() {
 
 	cryosparcwCmd.PreRunE = preRunCmd("worker", false)
 
+	// changeport commands
+	changeportCmd := newCommand(
+		"changeport",
+		"Change base port",
+		runCmd((*command.Command).RunChangePort),
+	)
+
 	// Install commands
 	installCmd := newCommand(
 		"install",
@@ -197,6 +204,7 @@ func main() {
 		instancesCmd,
 		cryosparcmCmd,
 		cryosparcwCmd,
+		changeportCmd,
 		installCmd,
 		lanesCmd,
 		userCmd,
@@ -217,6 +225,11 @@ func main() {
 	// =============================================
 	addCryosparcwFlags(cryosparcwCmd)
 
+	// =============================================
+	// changeport CLI Flags
+	// =============================================
+	addChangePortFlags(changeportCmd)
+
 	// =============================================
 	// Install CLI Flags
 	// =============================================
@@ -663,6 +676,18 @@ func addCryosparcmFlags(cmd *cobra.Command) {
 	flags.SortFlags = false
 }
 
+// changeport
+func addChangePortFlags(cmd *cobra.Command) {
+	flags := cmd.Flags()
+
+	addCryosparcPathFlag(cmd)
+	addHostnameFlag(cmd)
+	addBasePortFlag(cmd)
+
+	flags.SetInterspersed(false)
+	flags.SortFlags = false
+}
+
 // cryosparcw
 func addCryosparcwFlags(cmd *cobra.Command) {
 	flags := cmd.Flags()