diff --git a/gems/rdoc/CVE-2021-31799.yml b/gems/rdoc/CVE-2021-31799.yml
index bfefacaf0d..b6e478fdb0 100644
--- a/gems/rdoc/CVE-2021-31799.yml
+++ b/gems/rdoc/CVE-2021-31799.yml
@@ -12,6 +12,8 @@ description: |
   run an arbitrary command execution against a user who attempts to run `rdoc`
   command.
 cvss_v3: 7.0
+unaffected_versions:
+  - "< 3.11.0"
 patched_versions:
   - "~> 6.1.2.1"
   - "~> 6.2.1.1"