diff --git a/cmd/rp/cmd/run.go b/cmd/rp/cmd/run.go
index 36ba0cb..867f949 100644
--- a/cmd/rp/cmd/run.go
+++ b/cmd/rp/cmd/run.go
@@ -31,7 +31,7 @@ func init() {
 	runCmd.PersistentFlags().StringVar(&flagBranch, "branch", "main", "")
 	runCmd.PersistentFlags().StringVar(&flagOwner, "owner", "", "")
 	runCmd.PersistentFlags().StringVar(&flagRepo, "repo", "", "")
-	runCmd.PersistentFlags().StringVar(&flagRepo, "extra-files", "", "")
+	runCmd.PersistentFlags().StringVar(&flagExtraFiles, "extra-files", "", "")
 }
 
 func run(cmd *cobra.Command, _ []string) error {
diff --git a/releaserpleaser.go b/releaserpleaser.go
index 4bf25f9..ba069e8 100644
--- a/releaserpleaser.go
+++ b/releaserpleaser.go
@@ -277,6 +277,19 @@ func (rp *ReleaserPleaser) runReconcileReleasePR(ctx context.Context) error {
 			updatedContent = updater.UpdateContent(updatedContent, nextVersion)
 		}
 
+		err = file.Truncate(0)
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+		_, err = file.Seek(0, 0)
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+		_, err = file.Write([]byte(updatedContent))
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+
 		_, err = worktree.Add(extraFile)
 		if err != nil {
 			return fmt.Errorf("failed to add updated file to git worktree: %w", err)
diff --git a/updater.go b/updater.go
index 432c7f2..f1aab3c 100644
--- a/updater.go
+++ b/updater.go
@@ -25,10 +25,12 @@ func (u *GenericUpdater) UpdateContent(content, version string) string {
 	output.Grow(len(content))
 	for _, line := range strings.Split(content, "\n") {
 		if strings.Contains(line, InlineUpdateMarker) {
-			line = SemVerRegex.ReplaceAllLiteralString(line, version)
+			// We strip the "v" prefix to avoid adding/removing it from the users input.
+			line = SemVerRegex.ReplaceAllLiteralString(line, strings.TrimPrefix(version, "v"))
 		}
 
 		output.WriteString(line)
+		// TODO: Fix added newline
 		output.WriteByte('\n')
 	}