diff --git a/.cspell.json b/.cspell.json
index 5f66b4c6..de5bbd1b 100644
--- a/.cspell.json
+++ b/.cspell.json
@@ -5,7 +5,7 @@
   "dictionaryDefinitions": [
     {
       "name": "organization-dictionary",
-      "path": "./.github/.cspell/organization-dictionary.txt",
+      "path": "https://raw.githubusercontent.com/taiki-e/github-actions/HEAD/.github/.cspell/organization-dictionary.txt",
       "addWords": true
     },
     {
diff --git a/.github/.cspell/organization-dictionary.txt b/.github/.cspell/organization-dictionary.txt
deleted file mode 100644
index 4a7d4792..00000000
--- a/.github/.cspell/organization-dictionary.txt
+++ /dev/null
@@ -1,182 +0,0 @@
-// This is a dictionary shared by projects under https://github.com/taiki-e.
-// It is not intended for manual editing.
-
-endo
-taiki
-
-// tool name and its configs or options
-asan
-cdylib
-cflags
-clippy
-codegen
-cranelift
-cxxflags
-dylib
-exitcode
-miri
-miriflags
-msan
-rlib
-rustc
-rustdoc
-rustdocflags
-rustflags
-rustfmt
-rustsec
-rustup
-staticlib
-tsan
-valgrind
-xcompile
-Zmiri
-
-// Rust target triple/spec
-aarch
-amdgpu
-androideabi
-armeb
-armebv
-armv
-atmega
-bpfeb
-bpfel
-csky
-cuda
-eabi
-eabihf
-emscripten
-espidf
-fortanix
-gnuabi
-gnuabiv
-gnueabi
-gnueabihf
-gnullvm
-gnuspe
-gnux
-illumos
-imac
-libnx
-loongarch
-macabi
-mipsel
-mipsisa
-msvc
-muslabi
-musleabi
-musleabihf
-newlib
-newlibeabihf
-nvptx
-ohos
-openwrt
-relibc
-riscv
-softfloat
-sparcv
-spirv
-teeos
-thumbeb
-thumbebv
-thumbv
-tvos
-uclibc
-uclibceabi
-uclibceabihf
-uefi
-vxworks
-wasi
-watchos
-xous
-xtensa
-
-// Rust other
-aclass
-acqrel
-alloc
-builtins
-bytecount
-canonicalize
-cfgs
-concat
-ctypes
-dealloc
-deque
-doctest
-doctests
-hasher
-idents
-impls
-inlateout
-intrinsics
-lateout
-libdir
-mclass
-memcpy
-msrv
-nand
-nanos
-nomem
-nonoverlapping
-noreturn
-nostack
-peekable
-powf
-punct
-rclass
-repr
-rfind
-rfold
-rposition
-rsplit
-rustlib
-seqcst
-simd
-splitn
-structs
-subsec
-supertrait
-supertraits
-sysroot
-toolchains
-turbofish
-uninit
-unsized
-upcastable
-
-// Other
-armel
-armhf
-binutils
-connrefused
-cygwin
-dpkg
-elif
-endianness
-esac
-euxo
-gsub
-libc
-markdownlint
-moreutils
-msys
-noninteractive
-noprofile
-norc
-nproc
-objcopy
-objdump
-pacman
-pipefail
-powerset
-proto
-ranlib
-readelf
-shellcheckrc
-SIGABRT
-SIGILL
-subcmd
-tempdir
-tlsv
-tmpdir
diff --git a/tools/tidy.sh b/tools/tidy.sh
index dda6c975..ae213f6d 100755
--- a/tools/tidy.sh
+++ b/tools/tidy.sh
@@ -350,7 +350,7 @@ if [[ -f .cspell.json ]]; then
             dependencies=$(sed <<<"${dependencies}" 's/[0-9_-]/\n/g' | LC_ALL=C sort -f -u)
         fi
         config_old=$(<.cspell.json)
-        config_new=$(grep <<<"${config_old}" -v ' *//' | jq 'del(.dictionaries[] | select(index("organization-dictionary") | not))' | jq 'del(.dictionaryDefinitions[] | select(.name == "organization-dictionary" | not))')
+        config_new=$(grep <<<"${config_old}" -v '^ *//' | jq 'del(.dictionaries[] | select(index("organization-dictionary") | not))' | jq 'del(.dictionaryDefinitions[] | select(.name == "organization-dictionary" | not))')
         trap -- 'echo "${config_old}" >.cspell.json; echo >&2 "$0: trapped SIGINT"; exit 1' SIGINT
         echo "${config_new}" >.cspell.json
         if [[ -n "${has_rust}" ]]; then