diff --git a/spectral/scripts/rules.sh b/spectral/scripts/rules.sh
index 94abe06..0e5fc76 100755
--- a/spectral/scripts/rules.sh
+++ b/spectral/scripts/rules.sh
@@ -1,5 +1,8 @@
 ## This script tests and validates rules APIs
 
+spectral_version=`cat "../spectral.version"`
+spectral --version || npm install -g --force @stoplight/spectral-cli@$spectral_version
+
 ## Fetch current managed services APIS from sdk repository 
 ## This apis can be used for testing
 ## Script needs to run in the test working directory
@@ -11,17 +14,17 @@ file='kas-fleet-manager.yaml'
 
 wget -P $folder ${baseUrl}${file}
 echo "linting $file OAS file" 
-yarn spectral lint $folder/$file -v -r $spectralConfig
+spectral lint $folder/$file -v -r $spectralConfig
 
 file='srs-fleet-manager.json'
 wget -P $folder ${baseUrl}${file}
 echo "linting $file OAS file" 
-yarn spectral lint $folder/$file -v -r $spectralConfig
+spectral lint $folder/$file -v -r $spectralConfig
 
 file='connector_mgmt.yaml'
 wget -P $folder ${baseUrl}${file}
 echo "linting $file OAS file" 
-yarn spectral lint $folder/$file -v -r $spectralConfig
+spectral lint $folder/$file -v -r $spectralConfig
 
 ## Updates made to the following need to be refected in their respective .openapi OAS files before the linting can pass and added to CI