diff --git a/lib/linter.sh b/lib/linter.sh
index f178bb01..210cfd2d 100755
--- a/lib/linter.sh
+++ b/lib/linter.sh
@@ -1289,7 +1289,7 @@ if [ "${VALIDATE_BASH}" == "true" ]; then
   # Lint the bash files #
   #######################
   # LintCodebase "FILE_TYPE" "LINTER_NAME" "LINTER_CMD" "FILE_TYPES_REGEX" "FILE_ARRAY"
-  LintCodebase "BASH" "shellcheck" "shellcheck --color" ".*\.\(sh\|bash\|dash\|ksh\)\$" "${FILE_ARRAY_BASH[@]}"
+  LintCodebase "BASH" "shellcheck" "shellcheck --color --external-sources" ".*\.\(sh\|bash\|dash\|ksh\)\$" "${FILE_ARRAY_BASH[@]}"
 fi
 
 ##########################
diff --git a/lib/worker.sh b/lib/worker.sh
index 39c03db5..d1896434 100755
--- a/lib/worker.sh
+++ b/lib/worker.sh
@@ -570,7 +570,7 @@ function RunTestCases() {
   # TestCodebase "Language" "Linter" "Linter-command" "Regex to find files" "Test Folder"
   TestCodebase "ANSIBLE" "ansible-lint" "ansible-lint -v -c ${ANSIBLE_LINTER_RULES}" ".*\.\(yml\|yaml\)\$" "ansible"
   TestCodebase "ARM" "arm-ttk" "Import-Module ${ARM_TTK_PSD1} ; \${config} = \$(Import-PowerShellDataFile -Path ${ARM_LINTER_RULES}) ; Test-AzTemplate @config -TemplatePath" ".*\.\(json\)\$" "arm"
-  TestCodebase "BASH" "shellcheck" "shellcheck --color" ".*\.\(sh\|bash\|dash\|ksh\)\$" "shell"
+  TestCodebase "BASH" "shellcheck" "shellcheck --color --external-sources" ".*\.\(sh\|bash\|dash\|ksh\)\$" "shell"
   TestCodebase "CLOUDFORMATION" "cfn-lint" "cfn-lint --config-file ${CLOUDFORMATION_LINTER_RULES}" ".*\.\(json\|yml\|yaml\)\$" "cloudformation"
   TestCodebase "CLOJURE" "clj-kondo" "clj-kondo --config ${CLOJURE_LINTER_RULES} --lint" ".*\.\(clj\|cljs\|cljc\|edn\)\$" "clojure"
   TestCodebase "COFFEESCRIPT" "coffeelint" "coffeelint -f ${COFFEESCRIPT_LINTER_RULES}" ".*\.\(coffee\)\$" "coffeescript"