diff --git a/package.json b/package.json
index f5ec41a2..8599a6b5 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
     "npm": "10.5.0",
     "npm-package-arg": "^11.0.2",
     "npm-run-path": "^5.3.0",
+    "object-treeify": "^4.0.1",
     "semver": "^7.6.0",
     "validate-npm-package-name": "^5.0.0",
     "yarn": "^1.22.22"
diff --git a/src/commands/plugins/index.ts b/src/commands/plugins/index.ts
index bf4ebb1b..89699206 100644
--- a/src/commands/plugins/index.ts
+++ b/src/commands/plugins/index.ts
@@ -1,11 +1,16 @@
-import {Command, Flags, Interfaces, Plugin, ux} from '@oclif/core'
+import {Command, Flags, Interfaces, Plugin} from '@oclif/core'
 import chalk from 'chalk'
+// @ts-expect-error because object-treeify does not have types: https://github.com/blackflux/object-treeify/issues/1077
+import treeify from 'object-treeify'
 
 import Plugins from '../../plugins.js'
 import {sortBy} from '../../util.js'
 
 type JitPlugin = {name: string; type: string; version: string}
 type PluginsJson = Array<Interfaces.Plugin | JitPlugin>
+interface RecursiveTree {
+  [key: string]: RecursiveTree | string
+}
 
 export default class PluginsIndex extends Command {
   static description = 'List installed plugins.'
@@ -54,10 +59,9 @@ export default class PluginsIndex extends Command {
   }
 
   private createTree(plugin: Plugin) {
-    const tree = ux.tree()
+    const tree: RecursiveTree = {}
     for (const p of plugin.children) {
-      const name = this.formatPlugin(p)
-      tree.insert(name, this.createTree(p))
+      tree[this.formatPlugin(p)] = this.createTree(p)
     }
 
     return tree
@@ -68,7 +72,7 @@ export default class PluginsIndex extends Command {
       this.log(this.formatPlugin(plugin))
       if (plugin.children && plugin.children.length > 0) {
         const tree = this.createTree(plugin)
-        tree.display()
+        this.log(treeify(tree))
       }
     }
   }
diff --git a/src/commands/plugins/inspect.ts b/src/commands/plugins/inspect.ts
index 776c5724..60dcd572 100644
--- a/src/commands/plugins/inspect.ts
+++ b/src/commands/plugins/inspect.ts
@@ -1,7 +1,9 @@
-import {Args, Command, Flags, Plugin, ux} from '@oclif/core'
+import {Args, Command, Flags, Plugin} from '@oclif/core'
 import chalk from 'chalk'
 import {readFile} from 'node:fs/promises'
 import {dirname, join, sep} from 'node:path'
+// @ts-expect-error because object-treeify does not have types: https://github.com/blackflux/object-treeify/issues/1077
+import treeify from 'object-treeify'
 
 import {determineLogLevel} from '../../log-level.js'
 import Plugins from '../../plugins.js'
@@ -19,7 +21,7 @@ function trimUntil(fsPath: string, part: string): string {
   return parts.slice(0, partIndex + 1).join(sep)
 }
 
-type Dependencies = Record<string, {from: string; version: string}>
+type Dependencies = Record<string, {from: string | undefined; version: string}>
 type PluginWithDeps = Omit<
   Plugin,
   | '_commandsDir'
@@ -103,37 +105,33 @@ export default class PluginsInspect extends Command {
 
   async inspect(pluginName: string, verbose = false): Promise<PluginWithDeps> {
     const plugin = this.findPlugin(pluginName)
-    const tree = ux.tree()
-    const pluginHeader = chalk.bold.cyan(plugin.name)
-    tree.insert(pluginHeader)
-    tree.nodes[pluginHeader].insert(`version ${plugin.version}`)
-    if (plugin.tag) tree.nodes[pluginHeader].insert(`tag ${plugin.tag}`)
-    if (plugin.pjson.homepage) tree.nodes[pluginHeader].insert(`homepage ${plugin.pjson.homepage}`)
-    tree.nodes[pluginHeader].insert(`location ${plugin.root}`)
-
-    tree.nodes[pluginHeader].insert('commands')
-    const commands = sortBy(plugin.commandIDs, (c) => c)
-    for (const cmd of commands) tree.nodes[pluginHeader].nodes.commands.insert(cmd)
-
-    const dependencies = {...plugin.pjson.dependencies}
-
-    tree.nodes[pluginHeader].insert('dependencies')
-    const deps = sortBy(Object.keys(dependencies), (d) => d)
+    const dependencies: Record<string, null> = {}
     const depsJson: Dependencies = {}
-    for (const dep of deps) {
+    for (const dep of sortBy(Object.keys({...plugin.pjson.dependencies}), (d) => d)) {
       // eslint-disable-next-line no-await-in-loop
       const {pkgPath, version} = await this.findDep(plugin, dep)
       if (!version) continue
 
-      const from = dependencies[dep] ?? null
+      const from = plugin.pjson.dependencies?.[dep]
       const versionMsg = chalk.dim(from ? `${from} => ${version}` : version)
       const msg = verbose ? `${dep} ${versionMsg} ${pkgPath}` : `${dep} ${versionMsg}`
 
-      tree.nodes[pluginHeader].nodes.dependencies.insert(msg)
+      dependencies[msg] = null
       depsJson[dep] = {from, version}
     }
 
-    if (!this.jsonEnabled()) tree.display()
+    const tree = {
+      [chalk.bold.cyan(plugin.name)]: {
+        [`version ${plugin.version}`]: null,
+        ...(plugin.tag ? {[`tag ${plugin.tag}`]: null} : {}),
+        ...(plugin.pjson.homepage ? {[`homepage ${plugin.pjson.homepage}`]: null} : {}),
+        [`location ${plugin.root}`]: null,
+        commands: Object.fromEntries(sortBy(plugin.commandIDs, (c) => c).map((id) => [id, null])),
+        dependencies,
+      },
+    }
+
+    this.log(treeify(tree))
 
     return {...plugin, deps: depsJson}
   }
diff --git a/yarn.lock b/yarn.lock
index dd5ae2b1..b9dc12e9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5657,6 +5657,11 @@ object-treeify@^1.1.33:
   resolved "https://registry.npmjs.org/object-treeify/-/object-treeify-1.1.33.tgz"
   integrity sha512-EFVjAYfzWqWsBMRHPMAXLCDIJnpMhdWAqR7xG6M6a2cs6PMFpl/+Z20w9zDW4vkxOFfddegBKq9Rehd0bxWE7A==
 
+object-treeify@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/object-treeify/-/object-treeify-4.0.1.tgz#f91a7dec795d8275886e7f1bd78408f6975be825"
+  integrity sha512-Y6tg5rHfsefSkfKujv2SwHulInROy/rCL5F4w0QOWxut8AnxYxf0YmNhTh95Zfyxpsudo66uqkux0ACFnyMSgQ==
+
 object.assign@^4.1.5:
   version "4.1.5"
   resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.1.5.tgz#3a833f9ab7fdb80fc9e8d2300c803d216d8fdbb0"