diff --git a/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-non-root-usr b/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-non-root-usr
index ea8de72..c08b337 100644
--- a/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-non-root-usr
+++ b/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-non-root-usr
@@ -68,9 +68,9 @@ ARG GORELEASER_VERSION
 ARG COSIGN_VERSION
 ARG KO_VERSION
 
-RUN go install github.com/goreleaser/goreleaser/v2@v$GORELEASER_VERSION \
- && go install github.com/sigstore/cosign/v2/cmd/cosign@v$COSIGN_VERSION \
- && go install github.com/google/ko@$KO_VERSION
+RUN go install github.com/goreleaser/goreleaser/v2@v${GORELEASER_VERSION} \
+ && go install github.com/sigstore/cosign/v2/cmd/cosign@v${COSIGN_VERSION} \
+ && go install github.com/google/ko@v${KO_VERSION}
 
 #==============================================================================#
 # installing trivy
diff --git a/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-root-usr b/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-root-usr
index a34f97e..b5acc2a 100644
--- a/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-root-usr
+++ b/Containerfile.goreleaser-ko-cosign-trivy-syft-x86-arm64-root-usr
@@ -67,9 +67,9 @@ ARG GORELEASER_VERSION
 ARG COSIGN_VERSION
 ARG KO_VERSION
 
-RUN go install github.com/goreleaser/goreleaser/v2@v$GORELEASER_VERSION \
- && go install github.com/sigstore/cosign/v2/cmd/cosign@v$COSIGN_VERSION \
- && go install github.com/google/ko@$KO_VERSION
+RUN go install github.com/goreleaser/goreleaser/v2@v${GORELEASER_VERSION} \
+ && go install github.com/sigstore/cosign/v2/cmd/cosign@v${COSIGN_VERSION} \
+ && go install github.com/google/ko@v${KO_VERSION}
 
 #==============================================================================#
 # installing trivy