diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 02cd10bfb..c9bafbb5e 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -99,6 +99,8 @@ jobs:
           - { target: ubuntu-latest, config: openssl-3.5.0 }
           - { target: ubuntu-latest, config: openssl-3.5.3 }  # keep
           - { target: ubuntu-latest, config: openssl-3.5.4 }
+          - { target: ubuntu-latest, config: openssl-3.6.2 }
+          - { target: ubuntu-latest, config: openssl-4.0.0 }
           - { target: ubuntu-latest, config: openssl-1.1.1_stable }
           - { target: ubuntu-latest, config: openssl-3.0 }  # stable branch
           - { target: ubuntu-latest, config: openssl-3.1 }  # stable branch
@@ -107,6 +109,7 @@ jobs:
           - { target: ubuntu-latest, config: openssl-3.4 }  # stable branch
           - { target: ubuntu-latest, config: openssl-3.5 }  # stable branch
           - { target: ubuntu-latest, config: openssl-3.6 }  # stable branch
+          - { target: ubuntu-latest, config: openssl-4.0 }  # stable branch
           - { target: ubuntu-latest, config: putty-versions }
           - { target: ubuntu-latest, config: zlib-develop }
           - { target: ubuntu-latest, config: tcmalloc }