diff --git a/.github/workflows/GnuTests.yml b/.github/workflows/GnuTests.yml
index 1feb49677da..f82bbcabdba 100644
--- a/.github/workflows/GnuTests.yml
+++ b/.github/workflows/GnuTests.yml
@@ -29,7 +29,6 @@ env:
   TEST_ROOT_FULL_SUMMARY_FILE: 'gnu-root-full-result.json'
   TEST_SELINUX_FULL_SUMMARY_FILE: 'selinux-gnu-full-result.json'
   TEST_SELINUX_ROOT_FULL_SUMMARY_FILE: 'selinux-root-gnu-full-result.json'
-  REPO_GNU_REF: "v9.8"
 
 jobs:
   native:
@@ -42,6 +41,16 @@ jobs:
       with:
         path: 'uutils'
         persist-credentials: false
+    - name: Extract GNU version from build-gnu.sh
+      id: gnu-version
+      run: |
+        GNU_VERSION=$(grep '^release_tag_GNU=' uutils/util/build-gnu.sh | cut -d'"' -f2)
+        if [ -z "$GNU_VERSION" ]; then
+          echo "Error: Failed to extract GNU version from build-gnu.sh"
+          exit 1
+        fi
+        echo "REPO_GNU_REF=${GNU_VERSION}" >> $GITHUB_ENV
+        echo "Extracted GNU version: ${GNU_VERSION}"
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: stable
@@ -164,6 +173,16 @@ jobs:
       with:
         path: 'uutils'
         persist-credentials: false
+    - name: Extract GNU version from build-gnu.sh
+      id: gnu-version-selinux
+      run: |
+        GNU_VERSION=$(grep '^release_tag_GNU=' uutils/util/build-gnu.sh | cut -d'"' -f2)
+        if [ -z "$GNU_VERSION" ]; then
+          echo "Error: Failed to extract GNU version from build-gnu.sh"
+          exit 1
+        fi
+        echo "REPO_GNU_REF=${GNU_VERSION}" >> $GITHUB_ENV
+        echo "Extracted GNU version: ${GNU_VERSION}"
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: stable
diff --git a/util/build-gnu.sh b/util/build-gnu.sh
index 734088252f4..aeaceda0e09 100755
--- a/util/build-gnu.sh
+++ b/util/build-gnu.sh
@@ -70,7 +70,7 @@ fi
 
 ###
 
-release_tag_GNU="v9.8"
+release_tag_GNU="v9.9"
 
 # check if the GNU coreutils has been cloned, if not print instructions
 # note: the ${path_GNU} might already exist, so we check for the .git directory
@@ -309,10 +309,10 @@ sed -i -e "s/ginstall: creating directory/install: creating directory/g" tests/i
 # GNU doesn't support padding < -LONG_MAX
 # disable this test case
 # Use GNU sed because option -z is not available on BSD sed
-"${SED}" -i -Ez "s/\n([^\n#]*pad-3\.2[^\n]*)\n([^\n]*)\n([^\n]*)/\n# uutils\/numfmt supports padding = LONG_MIN\n#\1\n#\2\n#\3/" tests/misc/numfmt.pl
+"${SED}" -i -Ez "s/\n([^\n#]*pad-3\.2[^\n]*)\n([^\n]*)\n([^\n]*)/\n# uutils\/numfmt supports padding = LONG_MIN\n#\1\n#\2\n#\3/" tests/numfmt/numfmt.pl
 
 # Update the GNU error message to match the one generated by clap
-sed -i -e "s/\$prog: multiple field specifications/error: the argument '--field <FIELDS>' cannot be used multiple times\n\nUsage: numfmt [OPTION]... [NUMBER]...\n\nFor more information, try '--help'./g" tests/misc/numfmt.pl
+sed -i -e "s/\$prog: multiple field specifications/error: the argument '--field <FIELDS>' cannot be used multiple times\n\nUsage: numfmt [OPTION]... [NUMBER]...\n\nFor more information, try '--help'./g" tests/numfmt/numfmt.pl
 sed -i -e "s/Try 'mv --help' for more information/For more information, try '--help'/g" -e "s/mv: missing file operand/error: the following required arguments were not provided:\n  <files>...\n\nUsage: mv [OPTION]... [-T] SOURCE DEST\n       mv [OPTION]... SOURCE... DIRECTORY\n       mv [OPTION]... -t DIRECTORY SOURCE...\n/g" -e "s/mv: missing destination file operand after 'no-file'/error: The argument '<files>...' requires at least 2 values, but only 1 was provided\n\nUsage: mv [OPTION]... [-T] SOURCE DEST\n       mv [OPTION]... SOURCE... DIRECTORY\n       mv [OPTION]... -t DIRECTORY SOURCE...\n/g" tests/mv/diag.sh
 
 # our error message is better
diff --git a/util/why-error.md b/util/why-error.md
index 0fdff867a97..ac1e10ce62b 100644
--- a/util/why-error.md
+++ b/util/why-error.md
@@ -26,7 +26,7 @@ This file documents why some tests are failing:
 * gnu/tests/misc/close-stdout.sh
 * gnu/tests/misc/comm.pl
 * gnu/tests/misc/nohup.sh
-* gnu/tests/misc/numfmt.pl - https://github.com/uutils/coreutils/issues/7219 / https://github.com/uutils/coreutils/issues/7221
+* gnu/tests/numfmt/numfmt.pl - https://github.com/uutils/coreutils/issues/7219 / https://github.com/uutils/coreutils/issues/7221
 * gnu/tests/misc/stdbuf.sh - https://github.com/uutils/coreutils/issues/7072
 * gnu/tests/misc/tee.sh - https://github.com/uutils/coreutils/issues/7073
 * gnu/tests/misc/time-style.sh