diff --git a/action.yml b/action.yml
index e8abc1a..09d72cb 100644
--- a/action.yml
+++ b/action.yml
@@ -53,17 +53,17 @@ runs:
           fi
         }
         if ! check_label_exists ${DEPENDENCIES_LABEL}; then
-          gh label create ${DEPENDENCIES_LABEL} \
+          gh label create "${DEPENDENCIES_LABEL}" \
             --color "#0366d6" \
             --description "Pull requests that update a dependency file"
         fi
         if ! check_label_exists ${GO_LABEL}; then
-          gh label create ${GO_LABEL} \
+          gh label create "${GO_LABEL}" \
             --color "#16e2e2" \
             --description "Pull requests that update Go code"
         fi
         if ! check_label_exists ${GOMOD_GO_VERSION_UPDATER_LABEL}; then
-          gh label create ${GOMOD_GO_VERSION_UPDATER_LABEL} \
+          gh label create "${GOMOD_GO_VERSION_UPDATER_LABEL}" \
             --color "#F50BAB" \
             --description "Pull requests that update Go version in the go.mod file"
         fi
@@ -121,7 +121,7 @@ runs:
         fi
 
         if [ -n "${{ inputs.extra-pr-label }}" ]; then
-          export GOMOD_GO_VERSION_UPDATER_LABEL_EXTRA="--label ${{ inputs.extra-pr-label }}"
+          export GOMOD_GO_VERSION_UPDATER_LABEL_EXTRA="--label \"${{ inputs.extra-pr-label }}\""
         fi
 
         echo "creating pr..."
@@ -130,9 +130,9 @@ runs:
           --body "${GOMOD_GO_VERSION_UPDATER_ACTION_MESSAGE}" \
           --fill \
           --head "${GOMOD_GO_VERSION_UPDATER_ACTION_BRANCH}" \
-          --label ${DEPENDENCIES_LABEL} \
-          --label ${GO_LABEL} \
-          --label ${GOMOD_GO_VERSION_UPDATER_LABEL} ${GOMOD_GO_VERSION_UPDATER_LABEL_EXTRA}
+          --label "${DEPENDENCIES_LABEL}" \
+          --label "${GO_LABEL}" \
+          --label "${GOMOD_GO_VERSION_UPDATER_LABEL}" ${GOMOD_GO_VERSION_UPDATER_LABEL_EXTRA}
       shell: bash
       env:
         GH_TOKEN: ${{ github.token }}