diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e2b2121..3424bdb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,14 +36,14 @@ jobs:
         run: |
           cd app
           file='VERSION'
-          fileData=`cat $file`
+          fileData=$(cat $file)
           IFS='.'
           read -a versionValue <<< "$fileData"
-          buildNumber=$(expr `expr ${versionValue[0]} \* 1000000` + `expr ${versionValue[1]} \* 10000` + ${CI_PIPELINE_IID})
+          buildNumber=$(( ${versionValue[0]} * 1000000 + ${versionValue[1]} * 10000 + CI_PIPELINE_IID ))
           IFS=''
           buildName="${versionValue[0]}.${versionValue[1]}.$CI_PIPELINE_IID"
+
           echo "Generating android build $buildName $buildNumber"
-          flutter build apk --flavor prod --release --build-number=$buildNumber --build-name=$buildName
+          flutter build apk --release --build-number=$buildNumber --build-name=$buildName
           mv build/app/outputs/apk/release/*.apk .
           cd ..
-