diff --git a/.ci/check-format.sh b/.ci/check-format.sh
index e44ccc28d..133e33beb 100755
--- a/.ci/check-format.sh
+++ b/.ci/check-format.sh
@@ -6,7 +6,7 @@ set -x
 
 for file in ${SOURCES};
 do
-    clang-format-16 ${file} > expected-format
+    clang-format-18 ${file} > expected-format
     diff -u -p --label="${file}" --label="expected coding style" ${file} expected-format
 done
-exit $(clang-format-16 --output-replacements-xml ${SOURCES} | grep -E -c "</replacement>")
+exit $(clang-format-18 --output-replacements-xml ${SOURCES} | grep -E -c "</replacement>")
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index af0874079..f4f081822 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -36,7 +36,7 @@ jobs:
     - uses: actions/checkout@v4
     - name: coding convention
       run: |
-            sudo apt-get install -q -y clang-format-16
+            sudo apt-get install -q -y clang-format-18
             .ci/check-newline.sh
             .ci/check-format.sh
       shell: bash
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 48fa54da4..585a6fbe0 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -44,7 +44,7 @@ However, participation requires adherence to fundamental ground rules:
   This variant should be considered the standard for all documentation efforts.
   For instance, opt for "initialize" over "initialise" and "color" rather than "colour".
 
-Software requirement: [clang-format](https://clang.llvm.org/docs/ClangFormat.html) version 12 or later.
+Software requirement: [clang-format](https://clang.llvm.org/docs/ClangFormat.html) version 18 or later.
 
 This repository consistently contains an up-to-date `.clang-format` file with rules that match the explained ones.
 For maintaining a uniform coding style, execute the command `clang-format -i *.[ch]`.
diff --git a/list.h b/list.h
index 3d427726a..e964ae0cb 100644
--- a/list.h
+++ b/list.h
@@ -54,7 +54,7 @@ struct list_head {
     })
 #else
 #define container_of(ptr, type, member) \
-    ((type *) ((char *) (ptr) -offsetof(type, member)))
+    ((type *) ((char *) (ptr) - offsetof(type, member)))
 #endif
 #endif
 
diff --git a/scripts/checksums b/scripts/checksums
index 202d14c9b..1180befdd 100644
--- a/scripts/checksums
+++ b/scripts/checksums
@@ -1,2 +1,2 @@
 db6784ff3917888db4d1dceaa0570d99ed40e762  queue.h
-3337dbccc33eceedda78e36cc118d5a374838ec7  list.h
+bfb6df45d64356868c86a7173455d39970bd0270  list.h