diff --git a/action.yml b/action.yml
index 5f4cead2..6c7b60db 100644
--- a/action.yml
+++ b/action.yml
@@ -120,6 +120,9 @@ inputs:
   CHECK_ONLY_COMMIT_WHEN_DRAFT:
     description: Whether to check only commits when drafting.
     required: false
+  SUPPRESS_ERROR:
+    description: Whether to suppress git diff error.
+    required: false
 
 outputs:
   diff:
diff --git a/build.json b/build.json
index c41e96dc..f6ce4551 100644
--- a/build.json
+++ b/build.json
@@ -1 +1 @@
-{"owner":"technote-space","repo":"get-diff-action","sha":"FETCH_HEAD","ref":"refs/heads/master","tagName":"test/v4.2.1","branch":"gh-actions","tags":["test/v4.2.1","test/v4.2","test/v4"],"updated_at":"2021-08-01T12:36:54.029Z"}
\ No newline at end of file
+{"owner":"technote-space","repo":"get-diff-action","sha":"FETCH_HEAD","ref":"refs/heads/master","tagName":"test/v4.2.1","branch":"gh-actions","tags":["test/v4.2.1","test/v4.2","test/v4"],"updated_at":"2021-08-01T13:44:39.768Z"}
\ No newline at end of file
diff --git a/lib/utils/command.js b/lib/utils/command.js
index 8759fc7c..0a39b8d2 100644
--- a/lib/utils/command.js
+++ b/lib/utils/command.js
@@ -32,6 +32,7 @@ const getPatterns = () => github_action_helper_1.Utils.getArrayInput('PATTERNS',
 const getFiles = () => github_action_helper_1.Utils.getArrayInput('FILES', undefined, '');
 const getWorkspace = (relative) => github_action_helper_1.Utils.getBoolValue(core_1.getInput('ABSOLUTE')) ? (path_1.join(github_action_helper_1.Utils.getWorkspace(), relative) + '/') : '';
 const getSummaryIncludeFilesFlag = () => github_action_helper_1.Utils.getBoolValue(core_1.getInput('SUMMARY_INCLUDE_FILES'));
+const isSuppressGitDiffError = () => github_action_helper_1.Utils.getBoolValue(core_1.getInput('SUPPRESS_ERROR'));
 const isFilterIgnored = (item, files) => !!(files.length && files.includes(path_1.basename(item)));
 const isMatched = (item, patterns, options) => !patterns.length || !!multimatch_1.default(item, patterns, options).length;
 const toAbsolute = (item, workspace) => path_1.join(workspace, item);
@@ -107,7 +108,7 @@ const getGitDiff = (logger, context) => __awaiter(void 0, void 0, void 0, functi
             ] : []),
         ],
         cwd: github_action_helper_1.Utils.getWorkspace(),
-        // suppressError: true,
+        suppressError: isSuppressGitDiffError(),
     })).stdout)
         .map(item => ({
         file: item,