diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 030820e..aec9708 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,9 +6,9 @@ jobs:
     runs-on: ubuntu-latest
     defaults:
       run:
-        working-directory: test/using_gemfile
+        working-directory: test/using_bundler
     env:
-      BUNDLE_GEMFILE: ${{ github.workspace }}/test/using_gemfile/Gemfile
+      BUNDLE_GEMFILE: ${{ github.workspace }}/test/using_bundler/Gemfile
     steps:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
@@ -19,7 +19,8 @@ jobs:
         uses: ./
         with:
           github_token: ${{ secrets.github_token }}
-          brakeman_version: "gemfile"
           brakeman_flags: "--force"
+          skip_install: 'true'
+          use_bundler: 'true'
       - run: |
           test "$(bundle exec brakeman --version)" == "brakeman 5.1.2"
diff --git a/README.md b/README.md
index 5c27bac..d860793 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,14 @@ Optional. Additional reviewdog flags.
 
 Optional. The directory from which to look for and run brakeman. Default `.`.
 
+### `skip_install`
+
+Optional. Do not install Brakeman. Default: `false`.
+
+### `use_bundler`
+
+Optional. Run Brakeman with bundle exec. Default: `false`.
+
 ## Example usage
 
 ```yml
diff --git a/action.yml b/action.yml
index 79fa7c6..a310b11 100644
--- a/action.yml
+++ b/action.yml
@@ -37,6 +37,12 @@ inputs:
   workdir:
     description: "The directory from which to look for and run brakeman. Default '.'"
     default: '.'
+  skip_install:
+    description: "Do not install Brakeman. Default: `false`"
+    default: 'false'
+  use_bundler:
+    description: "Run Brakeman with bundle exec. Default: `false`"
+    default: 'false'
 runs:
   using: 'composite'
   steps:
@@ -54,6 +60,8 @@ runs:
         INPUT_FAIL_ON_ERROR: ${{ inputs.fail_on_error }}
         INPUT_REVIEWDOG_FLAGS: ${{ inputs.reviewdog_flags }}
         INPUT_WORKDIR: ${{ inputs.workdir }}
+        INPUT_SKIP_INSTALL: ${{ inputs.skip_install }}
+        INPUT_USE_BUNDLER: ${{ inputs.use_bundler }}
 branding:
   icon: 'check-circle'
   color: 'red'
diff --git a/script.sh b/script.sh
index 48d5185..ca08002 100755
--- a/script.sh
+++ b/script.sh
@@ -16,37 +16,45 @@ echo '::group::🐶 Installing reviewdog ... https://github.com/reviewdog/review
 curl -sfL https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh | sh -s -- -b "${TEMP_PATH}" "${REVIEWDOG_VERSION}" 2>&1
 echo '::endgroup::'
 
-echo '::group:: Installing brakeman with extensions ... https://github.com/presidentbeef/brakeman'
-# if 'gemfile' brakeman version selected
-if [ "$INPUT_BRAKEMAN_VERSION" = "gemfile" ]; then
-  # if Gemfile.lock is here
-  if [ -f 'Gemfile.lock' ]; then
-    # grep for brakeman version
-    BRAKEMAN_GEMFILE_VERSION=$(ruby -ne 'print $& if /^\s{4}brakeman\s\(\K.*(?=\))/' Gemfile.lock)
-
-    # if brakeman version found, then pass it to the gem install
-    # left it empty otherwise, so no version will be passed
-    if [ -n "$BRAKEMAN_GEMFILE_VERSION" ]; then
-      BRAKEMAN_VERSION=$BRAKEMAN_GEMFILE_VERSION
+if [ "${INPUT_SKIP_INSTALL}" = "false" ]; then
+  echo '::group:: Installing brakeman with extensions ... https://github.com/presidentbeef/brakeman'
+  # if 'gemfile' brakeman version selected
+  if [ "$INPUT_BRAKEMAN_VERSION" = "gemfile" ]; then
+    # if Gemfile.lock is here
+    if [ -f 'Gemfile.lock' ]; then
+      # grep for brakeman version
+      BRAKEMAN_GEMFILE_VERSION=$(ruby -ne 'print $& if /^\s{4}brakeman\s\(\K.*(?=\))/' Gemfile.lock)
+
+      # if brakeman version found, then pass it to the gem install
+      # left it empty otherwise, so no version will be passed
+      if [ -n "$BRAKEMAN_GEMFILE_VERSION" ]; then
+        BRAKEMAN_VERSION=$BRAKEMAN_GEMFILE_VERSION
+        else
+          printf "Cannot get the brakeman's version from Gemfile.lock. The latest version will be installed."
+      fi
       else
-        printf "Cannot get the brakeman's version from Gemfile.lock. The latest version will be installed."
+        printf 'Gemfile.lock not found. The latest version will be installed.'
     fi
     else
-      printf 'Gemfile.lock not found. The latest version will be installed.'
+      # set desired brakeman version
+      BRAKEMAN_VERSION=$INPUT_BRAKEMAN_VERSION
   fi
-  else
-    # set desired brakeman version
-    BRAKEMAN_VERSION=$INPUT_BRAKEMAN_VERSION
+
+  gem install -N brakeman --version "${BRAKEMAN_VERSION}"
+  echo '::endgroup::'
 fi
 
-gem install -N brakeman --version "${BRAKEMAN_VERSION}"
-echo '::endgroup::'
+if [ "${INPUT_USE_BUNDLER}" = "false" ]; then
+  BUNDLE_EXEC=""
+else
+  BUNDLE_EXEC="bundle exec "
+fi
 
 echo '::group:: Running brakeman with reviewdog 🐶 ...'
 BRAKEMAN_REPORT_FILE="$TEMP_PATH"/brakeman_report
 
 # shellcheck disable=SC2086
-brakeman --quiet --format tabs --no-exit-on-warn --no-exit-on-error ${INPUT_BRAKEMAN_FLAGS} --output "$BRAKEMAN_REPORT_FILE"
+${BUNDLE_EXEC}brakeman --quiet --format tabs --no-exit-on-warn --no-exit-on-error ${INPUT_BRAKEMAN_FLAGS} --output "$BRAKEMAN_REPORT_FILE"
 reviewdog < "$BRAKEMAN_REPORT_FILE" \
   -f=brakeman \
   -name="${INPUT_TOOL_NAME}" \
diff --git a/test/using_gemfile/Gemfile b/test/using_bundler/Gemfile
similarity index 100%
rename from test/using_gemfile/Gemfile
rename to test/using_bundler/Gemfile
diff --git a/test/using_gemfile/Gemfile.lock b/test/using_bundler/Gemfile.lock
similarity index 100%
rename from test/using_gemfile/Gemfile.lock
rename to test/using_bundler/Gemfile.lock