diff --git a/.changeset/small-dancers-sin.md b/.changeset/small-dancers-sin.md
new file mode 100644
index 0000000..59ce39e
--- /dev/null
+++ b/.changeset/small-dancers-sin.md
@@ -0,0 +1,7 @@
+---
+"@naverpay/eslint-plugin": minor
+---
+
+auto fix peer-deps-in-dev-deps
+
+PR: [auto fix peer-deps-in-dev-deps](https://github.com/NaverPayDev/code-style/pull/103)
diff --git a/packages/eslint-plugin/lib/rules/peer-deps-in-dev-deps.js b/packages/eslint-plugin/lib/rules/peer-deps-in-dev-deps.js
index 877dcae..bcab42c 100644
--- a/packages/eslint-plugin/lib/rules/peer-deps-in-dev-deps.js
+++ b/packages/eslint-plugin/lib/rules/peer-deps-in-dev-deps.js
@@ -1,4 +1,4 @@
-import path from 'path'
+import {getIndentationLength} from '../utils/getIndentationLength.js'
 
 /**
  * @type {import('eslint').Rule.RuleModule}
@@ -10,7 +10,7 @@ export default {
             description: 'Ensure that all peerDependencies are also declared in devDependencies.',
             recommended: false,
         },
-        fixable: null,
+        fixable: 'code',
         schema: [],
         messages: {
             missingInDevDeps: "'{{packageName}}' is declared in peerDependencies but not in devDependencies.",
@@ -20,7 +20,7 @@ export default {
     create(context) {
         return {
             Program(node) {
-                const filename = path.basename(context.getFilename())
+                const filename = context.filename.replace(context.cwd, '')
                 if (filename !== 'package.json') {
                     return
                 }
@@ -46,13 +46,37 @@ export default {
                     (property) => property.key.value === 'devDependencies',
                 )
 
-                for (const [depName] of Object.entries(peerDeps)) {
+                for (const [depName, depVersion] of Object.entries(peerDeps)) {
                     if (!Object.prototype.hasOwnProperty.call(devDeps, depName)) {
                         context.report({
                             node,
                             messageId: 'missingInDevDeps',
                             data: {packageName: depName},
                             loc: devDepsNode?.loc || peerDepsNode?.loc,
+                            fix(fixer) {
+                                const s = ' '.repeat(getIndentationLength(sourceCode.getText()))
+                                const ss = s.repeat(2)
+                                const newDevDep = `"${depName}": "${depVersion}"`
+
+                                if (devDepsNode) {
+                                    if (devDepsNode.value.properties.length > 0) {
+                                        const lastDevDep =
+                                            devDepsNode.value.properties[devDepsNode.value.properties.length - 1]
+
+                                        return fixer.insertTextAfter(lastDevDep, `,\n${ss}${newDevDep}`)
+                                    } else {
+                                        return fixer.replaceText(
+                                            devDepsNode,
+                                            `"devDependencies": {\n${ss}${newDevDep}\n${s}}`,
+                                        )
+                                    }
+                                } else {
+                                    return fixer.insertTextBefore(
+                                        peerDepsNode,
+                                        `"devDependencies": {\n${ss}${newDevDep}\n${s}},\n${s}`,
+                                    )
+                                }
+                            },
                         })
                     }
                 }
diff --git a/packages/eslint-plugin/lib/utils/getIndentationLength.js b/packages/eslint-plugin/lib/utils/getIndentationLength.js
new file mode 100644
index 0000000..c862a58
--- /dev/null
+++ b/packages/eslint-plugin/lib/utils/getIndentationLength.js
@@ -0,0 +1,13 @@
+export function getIndentationLength(jsonString) {
+    const lines = jsonString.split('\n')
+
+    for (const line of lines) {
+        const trimmedLine = line.trim()
+        if (trimmedLine.startsWith('"')) {
+            const leadingWhitespace = line.match(/^\s*/)[0]
+            return leadingWhitespace.length
+        }
+    }
+
+    return 2
+}