diff --git a/.gitlab/generate-ci/gen_ci.hs b/.gitlab/generate-ci/gen_ci.hs
index 30230a9dfec5ec096fb24623540310ceb445cc10..e9952f6ae7eabdd89156306c052d11e0fe1e5c8c 100644
--- a/.gitlab/generate-ci/gen_ci.hs
+++ b/.gitlab/generate-ci/gen_ci.hs
@@ -447,7 +447,8 @@ distroVariables :: LinuxDistro -> Variables
 distroVariables Alpine312 = alpineVariables
 distroVariables Alpine318 = alpineVariables
 distroVariables Centos7 = mconcat [
-  "HADRIAN_ARGS" =: "--docs=no-sphinx"
+    "HADRIAN_ARGS" =: "--docs=no-sphinx"
+  , "BROKEN_TESTS" =: "T22012" -- due to #23979
   ]
 distroVariables Rocky8 = mconcat [
   "HADRIAN_ARGS" =: "--docs=no-sphinx"
diff --git a/.gitlab/jobs.yaml b/.gitlab/jobs.yaml
index 43950ecc9a9b334997f54df0b16f56a659fa24c5..813992337da99dc8b35ef8cb59ad4e1deb73787f 100644
--- a/.gitlab/jobs.yaml
+++ b/.gitlab/jobs.yaml
@@ -1141,6 +1141,7 @@
     "variables": {
       "BIGNUM_BACKEND": "gmp",
       "BIN_DIST_NAME": "ghc-x86_64-linux-centos7-validate",
+      "BROKEN_TESTS": "T22012",
       "BUILD_FLAVOUR": "validate",
       "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
       "HADRIAN_ARGS": "--docs=no-sphinx",
@@ -3301,6 +3302,7 @@
     "variables": {
       "BIGNUM_BACKEND": "gmp",
       "BIN_DIST_NAME": "ghc-x86_64-linux-centos7-release+no_split_sections",
+      "BROKEN_TESTS": "T22012",
       "BUILD_FLAVOUR": "release+no_split_sections",
       "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
       "HADRIAN_ARGS": "--hash-unit-ids --docs=no-sphinx",