diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ec7423f0..be338003 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -215,6 +215,7 @@ jobs:
           - ubuntu:20.04 # glibc 2.31
           - ubuntu:22.04 # glibc 2.35
           - ubuntu:24.04 # glibc 2.39
+          - ubuntu:26.04 # glibc 2.42
           - debian:9-slim # glibc 2.24
           - debian:10-slim # glibc 2.28
           - debian:11-slim # glibc 2.31