diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7a90cd3..91accbd 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,9 +16,9 @@ on:
 jobs:
   shellcheck:
     runs-on: ubuntu-latest
-    container: koalaman/shellcheck-alpine:v0.6.0
+    container: koalaman/shellcheck-alpine:v0.9.0
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run shellcheck
       run: shellcheck -s bash -f tty ./bin/xpanes ./*.sh
 
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     container: mvdan/shfmt:v3.1.0-alpine
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run shfmt
       run: shfmt -i 2 -ci -sr -kp -d ./bin/xpanes ./*.sh
 
@@ -581,7 +581,7 @@ jobs:
 ###END_INSERT###
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Install dependency
       run: |
         apk add make curl gcc musl-dev libevent-dev ncurses-dev perl git util-linux bsd-compat-headers
diff --git a/bin/xpanes b/bin/xpanes
index ad3e816..928e677 100755
--- a/bin/xpanes
+++ b/bin/xpanes
@@ -46,6 +46,7 @@ readonly XP_ENOCMD=127
 
 # XP_THIS_FILE_NAME is supposed to be "xpanes".
 readonly XP_THIS_FILE_NAME="${0##*/}"
+# shellcheck disable=SC2155
 readonly XP_THIS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]:-$0}")" && pwd)"
 readonly XP_ABS_THIS_FILE_NAME="${XP_THIS_DIR}/${XP_THIS_FILE_NAME}"
 
@@ -1902,6 +1903,7 @@ xpns_parse_options() {
 
     ## Skip regularization if the arg is empty or --log= option
     if [[ -n "$opt" ]] && [[ -n "${opt##--log=*}" ]]; then
+      # shellcheck disable=SC2295
       ## -ovalue → -o value
       if [[ -z "${opt##-${XP_ARG_OPTIONS}?*}" ]]; then
         set -- "${opt#??}" ${1+"$@"}
diff --git a/install.sh b/install.sh
index 515883c..60d6f9b 100755
--- a/install.sh
+++ b/install.sh
@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 set -ue
 
+# shellcheck disable=SC2155
 readonly THIS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]:-$0}")" && pwd)"
 readonly BINMODE=755
 readonly DOCMODE=644
@@ -19,7 +20,7 @@ install -m "${BINMODE}" "${THIS_DIR}/bin/tmux-xpanes" "${PREFIX_BIN}/tmux-xpanes
 # Install (man)
 echo install -d "${PREFIX_MAN}"
 install -d "${PREFIX_MAN}"
-echo install -m "${BINMODE}" "${THIS_DIR}/man/xpanes.1" "${PREFIX_MAN}/xpanes.1"
-install -m "${BINMODE}" "${THIS_DIR}/man/xpanes.1" "${PREFIX_MAN}/xpanes.1"
-echo install -m "${BINMODE}" "${THIS_DIR}/man/tmux-xpanes.1" "${PREFIX_MAN}/tmux-xpanes.1"
-install -m "${BINMODE}" "${THIS_DIR}/man/tmux-xpanes.1" "${PREFIX_MAN}/tmux-xpanes.1"
+echo install -m "${DOCMODE}" "${THIS_DIR}/man/xpanes.1" "${PREFIX_MAN}/xpanes.1"
+install -m "${DOCMODE}" "${THIS_DIR}/man/xpanes.1" "${PREFIX_MAN}/xpanes.1"
+echo install -m "${DOCMODE}" "${THIS_DIR}/man/tmux-xpanes.1" "${PREFIX_MAN}/tmux-xpanes.1"
+install -m "${DOCMODE}" "${THIS_DIR}/man/tmux-xpanes.1" "${PREFIX_MAN}/tmux-xpanes.1"
diff --git a/uninstall.sh b/uninstall.sh
index ccf2d94..e0950a5 100755
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 set -ue
 
-readonly THIS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]:-$0}")" && pwd)"
 readonly PREFIX="${1:-/usr/local}"
 readonly PREFIX_BIN="${PREFIX}/bin"
 readonly PREFIX_MAN="${PREFIX}/share/man/man1"