diff --git a/lib/errors.ts b/lib/errors.ts
index bdb12188..858b07d6 100644
--- a/lib/errors.ts
+++ b/lib/errors.ts
@@ -39,6 +39,7 @@ export enum GitError {
   NoMergeToAbort,
   LocalChangesOverwritten,
   UnresolvedConflicts,
+  GPGFailedToSignData,
   // Start of GitHub-specific error codes
   PushWithFileSizeExceedingLimit,
   HexBranchNameRejected,
@@ -119,6 +120,7 @@ export const GitErrorRegexes: { [regexp: string]: GitError } = {
     GitError.LocalChangesOverwritten,
   'You must edit all merge conflicts and then\nmark them as resolved using git add|fatal: Exiting because of an unresolved conflict':
     GitError.UnresolvedConflicts,
+  'error: gpg failed to sign the data': GitError.GPGFailedToSignData,
   // GitHub-specific errors
   'error: GH001: ': GitError.PushWithFileSizeExceedingLimit,
   'error: GH002: ': GitError.HexBranchNameRejected,
diff --git a/test/fast/git-process-test.ts b/test/fast/git-process-test.ts
index 4eb4017e..8b2e8f3c 100644
--- a/test/fast/git-process-test.ts
+++ b/test/fast/git-process-test.ts
@@ -424,6 +424,15 @@ mark them as resolved using git add`
       expect(error).toBe(GitError.UnresolvedConflicts)
     })
 
+    it('can parse the failed to sign data error within a rebase', () => {
+      const stderr = `Rebasing (1/4)
+      Rebasing (2/4)
+      error: gpg failed to sign the data`
+
+      const error = GitProcess.parseError(stderr)
+      expect(error).toBe(GitError.GPGFailedToSignData)
+    })
+
     it('can parse the could not resolve host error', () => {
       const stderr = `"Cloning into '/cloneablepath/'...\nfatal: unable to access 'https://github.com/Daniel-McCarthy/dugite.git/': Could not resolve host: github.com\n"`