diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bdf1889..7f059ee 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,6 +20,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: ./
         with:
-          version: v1.29
+          version: latest
           args: --issues-exit-code=0 ./sample/...
           only-new-issues: true
diff --git a/action.yml b/action.yml
index b76c52e..268942d 100644
--- a/action.yml
+++ b/action.yml
@@ -1,31 +1,31 @@
 ---
-name: 'Run golangci-lint'
-description: 'Official golangci-lint action with line-attached annotations for found issues, caching and parallel execution.'
-author: 'golangci'
+name: "Run golangci-lint"
+description: "Official golangci-lint action with line-attached annotations for found issues, caching and parallel execution."
+author: "golangci"
 inputs:
   version:
-    description: 'version of golangci-lint to use in form of v1.2'
-    required: true
+    description: "version of golangci-lint to use in form of v1.2 or `latest` to use the latest version"
+    required: false
   args:
-    description: 'golangci-lint command line arguments'
-    default: ''
+    description: "golangci-lint command line arguments"
+    default: ""
     required: false
   working-directory:
-    description: 'golangci-lint working directory, default is project root'
+    description: "golangci-lint working directory, default is project root"
     required: false
   github-token:
-    description: 'the token is used for fetching patch of a pull request to show only new issues'
+    description: "the token is used for fetching patch of a pull request to show only new issues"
     default: ${{ github.token }}
     required: true
   only-new-issues:
-    description: 'if set to true and the action runs on a pull request - the action outputs only newly found issues'
+    description: "if set to true and the action runs on a pull request - the action outputs only newly found issues"
     default: false
     required: true
 
 runs:
-  using: 'node12'
-  main: 'dist/run/index.js'
-  post: 'dist/post_run/index.js'
+  using: "node12"
+  main: "dist/run/index.js"
+  post: "dist/post_run/index.js"
 branding:
-  icon: 'shield'
-  color: 'yellow'
+  icon: "shield"
+  color: "yellow"
diff --git a/dist/post_run/index.js b/dist/post_run/index.js
index 29a8a7f..743fb11 100644
--- a/dist/post_run/index.js
+++ b/dist/post_run/index.js
@@ -2019,6 +2019,9 @@ const core = __importStar(__webpack_require__(470));
 const httpm = __importStar(__webpack_require__(539));
 const versionRe = /^v(\d+)\.(\d+)(?:\.(\d+))?$/;
 const parseVersion = (s) => {
+    if (s == "latest" || s == "") {
+        return null;
+    }
     const match = s.match(versionRe);
     if (!match) {
         throw new Error(`invalid version string '${s}', expected format v1.2 or v1.2.3`);
@@ -2029,13 +2032,24 @@ const parseVersion = (s) => {
         patch: match[3] === undefined ? null : parseInt(match[3]),
     };
 };
-exports.stringifyVersion = (v) => `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`;
+exports.stringifyVersion = (v) => {
+    if (v == null) {
+        return "latest";
+    }
+    return `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`;
+};
 const minVersion = {
     major: 1,
     minor: 28,
     patch: 3,
 };
 const isLessVersion = (a, b) => {
+    if (a == null) {
+        return true;
+    }
+    if (b == null) {
+        return false;
+    }
     if (a.major != b.major) {
         return a.major < b.major;
     }
@@ -2044,8 +2058,11 @@ const isLessVersion = (a, b) => {
     return a.minor < b.minor;
 };
 const getRequestedLintVersion = () => {
-    const requestedLintVersion = core.getInput(`version`, { required: true });
+    const requestedLintVersion = core.getInput(`version`);
     const parsedRequestedLintVersion = parseVersion(requestedLintVersion);
+    if (parsedRequestedLintVersion == null) {
+        return null;
+    }
     if (parsedRequestedLintVersion.patch !== null) {
         throw new Error(`requested golangci-lint version '${requestedLintVersion}' was specified with the patch version, need specify only minor version`);
     }
@@ -2076,12 +2093,12 @@ function findLintVersion() {
     return __awaiter(this, void 0, void 0, function* () {
         core.info(`Finding needed golangci-lint version...`);
         const startedAt = Date.now();
-        const reqLintVersion = getRequestedLintVersion();
         const config = yield getConfig();
         if (!config.MinorVersionToConfig) {
             core.warning(JSON.stringify(config));
             throw new Error(`invalid config: no MinorVersionToConfig field`);
         }
+        const reqLintVersion = getRequestedLintVersion();
         const versionConfig = config.MinorVersionToConfig[exports.stringifyVersion(reqLintVersion)];
         if (!versionConfig) {
             throw new Error(`requested golangci-lint version '${exports.stringifyVersion(reqLintVersion)}' doesn't exist`);
diff --git a/dist/run/index.js b/dist/run/index.js
index c41c1cc..68c3b3b 100644
--- a/dist/run/index.js
+++ b/dist/run/index.js
@@ -2019,6 +2019,9 @@ const core = __importStar(__webpack_require__(470));
 const httpm = __importStar(__webpack_require__(539));
 const versionRe = /^v(\d+)\.(\d+)(?:\.(\d+))?$/;
 const parseVersion = (s) => {
+    if (s == "latest" || s == "") {
+        return null;
+    }
     const match = s.match(versionRe);
     if (!match) {
         throw new Error(`invalid version string '${s}', expected format v1.2 or v1.2.3`);
@@ -2029,13 +2032,24 @@ const parseVersion = (s) => {
         patch: match[3] === undefined ? null : parseInt(match[3]),
     };
 };
-exports.stringifyVersion = (v) => `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`;
+exports.stringifyVersion = (v) => {
+    if (v == null) {
+        return "latest";
+    }
+    return `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`;
+};
 const minVersion = {
     major: 1,
     minor: 28,
     patch: 3,
 };
 const isLessVersion = (a, b) => {
+    if (a == null) {
+        return true;
+    }
+    if (b == null) {
+        return false;
+    }
     if (a.major != b.major) {
         return a.major < b.major;
     }
@@ -2044,8 +2058,11 @@ const isLessVersion = (a, b) => {
     return a.minor < b.minor;
 };
 const getRequestedLintVersion = () => {
-    const requestedLintVersion = core.getInput(`version`, { required: true });
+    const requestedLintVersion = core.getInput(`version`);
     const parsedRequestedLintVersion = parseVersion(requestedLintVersion);
+    if (parsedRequestedLintVersion == null) {
+        return null;
+    }
     if (parsedRequestedLintVersion.patch !== null) {
         throw new Error(`requested golangci-lint version '${requestedLintVersion}' was specified with the patch version, need specify only minor version`);
     }
@@ -2076,12 +2093,12 @@ function findLintVersion() {
     return __awaiter(this, void 0, void 0, function* () {
         core.info(`Finding needed golangci-lint version...`);
         const startedAt = Date.now();
-        const reqLintVersion = getRequestedLintVersion();
         const config = yield getConfig();
         if (!config.MinorVersionToConfig) {
             core.warning(JSON.stringify(config));
             throw new Error(`invalid config: no MinorVersionToConfig field`);
         }
+        const reqLintVersion = getRequestedLintVersion();
         const versionConfig = config.MinorVersionToConfig[exports.stringifyVersion(reqLintVersion)];
         if (!versionConfig) {
             throw new Error(`requested golangci-lint version '${exports.stringifyVersion(reqLintVersion)}' doesn't exist`);
diff --git a/src/version.ts b/src/version.ts
index f2d1df8..e693cd4 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -6,11 +6,14 @@ export type Version = {
   major: number
   minor: number
   patch: number | null
-}
+} | null
 
 const versionRe = /^v(\d+)\.(\d+)(?:\.(\d+))?$/
 
 const parseVersion = (s: string): Version => {
+  if (s == "latest" || s == "") {
+    return null
+  }
   const match = s.match(versionRe)
   if (!match) {
     throw new Error(`invalid version string '${s}', expected format v1.2 or v1.2.3`)
@@ -23,7 +26,12 @@ const parseVersion = (s: string): Version => {
   }
 }
 
-export const stringifyVersion = (v: Version): string => `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`
+export const stringifyVersion = (v: Version): string => {
+  if (v == null) {
+    return "latest"
+  }
+  return `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`
+}
 
 const minVersion = {
   major: 1,
@@ -32,6 +40,12 @@ const minVersion = {
 }
 
 const isLessVersion = (a: Version, b: Version): boolean => {
+  if (a == null) {
+    return true
+  }
+  if (b == null) {
+    return false
+  }
   if (a.major != b.major) {
     return a.major < b.major
   }
@@ -42,8 +56,11 @@ const isLessVersion = (a: Version, b: Version): boolean => {
 }
 
 const getRequestedLintVersion = (): Version => {
-  const requestedLintVersion = core.getInput(`version`, { required: true })
+  const requestedLintVersion = core.getInput(`version`)
   const parsedRequestedLintVersion = parseVersion(requestedLintVersion)
+  if (parsedRequestedLintVersion == null) {
+    return null
+  }
   if (parsedRequestedLintVersion.patch !== null) {
     throw new Error(
       `requested golangci-lint version '${requestedLintVersion}' was specified with the patch version, need specify only minor version`
@@ -93,15 +110,14 @@ const getConfig = async (): Promise<Config> => {
 export async function findLintVersion(): Promise<VersionConfig> {
   core.info(`Finding needed golangci-lint version...`)
   const startedAt = Date.now()
-  const reqLintVersion = getRequestedLintVersion()
 
   const config = await getConfig()
-
   if (!config.MinorVersionToConfig) {
     core.warning(JSON.stringify(config))
     throw new Error(`invalid config: no MinorVersionToConfig field`)
   }
 
+  const reqLintVersion = getRequestedLintVersion()
   const versionConfig = config.MinorVersionToConfig[stringifyVersion(reqLintVersion)]
   if (!versionConfig) {
     throw new Error(`requested golangci-lint version '${stringifyVersion(reqLintVersion)}' doesn't exist`)