diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 2f041c018..47be1e0f0 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -60,7 +60,7 @@ jobs:
         cd Nethereum
         DATE=$(date +%Y%m%d-%H%M)
         GIT_COMMIT=$(git rev-parse --short HEAD)
-        VERSION="$env:BASE_VERSION+$DATE.$GIT_COMMIT"
+        VERSION="${{env.BASE_VERSION}}+$DATE.$GIT_COMMIT"
         dotnet pack -c Release -o ../dist -p:IncludeBuildOutput=false -p:IncludeContentInPack=false -p:TargetFrameworks=netstandard2.0 -p:Version=$VERSION
 
 # disabled for now, comes from https://github.com/Mersho/Nethereum/commits/NethMetapackage