diff --git a/.crow/build-all-versions-amd64.yaml b/.crow/build-all-versions-amd64.yaml
index 7a400c9..0c74ef7 100644
--- a/.crow/build-all-versions-amd64.yaml
+++ b/.crow/build-all-versions-amd64.yaml
@@ -77,7 +77,7 @@ steps:
           RMINOR=$(echo "$RV" | cut -d. -f1-2)
           [ "$RMINOR" = "$PRIMARY_MINOR" ] && continue
           echo "=== R-minor-sensitive pass under R $RV ==="
-          R_VERSION="$RV" $XVFB $XVFB_ARGS -n $SPLIT_INDEX -- "$(dirname "$RBIN")/Rscript" local/build-all.R --sensitive-only $SPLIT_INTO $SPLIT_INDEX $NCPUS 2>&1 || true
+          $XVFB $XVFB_ARGS -n $SPLIT_INDEX -- "$(dirname "$RBIN")/Rscript" local/build-all.R --sensitive-only $SPLIT_INTO $SPLIT_INDEX $NCPUS 2>&1 || true
         done
       # archive missed packages
       - /opt/R/$R_VERSION/bin/R -q -e "bincraft::process_unarchived_pkgs(paste(Sys.getenv('OS'), Sys.getenv('OS_VERSION')), Sys.getenv('ARCH'), workers = $NCPUS)"
diff --git a/.crow/build-all-versions-arm64.yaml b/.crow/build-all-versions-arm64.yaml
index aa92de2..aac08c3 100644
--- a/.crow/build-all-versions-arm64.yaml
+++ b/.crow/build-all-versions-arm64.yaml
@@ -90,7 +90,7 @@ steps:
           RMINOR=$(echo "$RV" | cut -d. -f1-2)
           [ "$RMINOR" = "$PRIMARY_MINOR" ] && continue
           echo "=== R-minor-sensitive pass under R $RV ==="
-          R_VERSION="$RV" $XVFB $XVFB_ARGS -n $SPLIT_INDEX -- "$(dirname "$RBIN")/Rscript" local/build-all.R --sensitive-only $SPLIT_INTO $SPLIT_INDEX $NCPUS 2>&1 || true
+          $XVFB $XVFB_ARGS -n $SPLIT_INDEX -- "$(dirname "$RBIN")/Rscript" local/build-all.R --sensitive-only $SPLIT_INTO $SPLIT_INDEX $NCPUS 2>&1 || true
         done
       # archive missed packages
       - /opt/R/$R_VERSION/bin/R -q -e "bincraft::process_unarchived_pkgs(paste(Sys.getenv('OS'), Sys.getenv('OS_VERSION')), Sys.getenv('ARCH'), workers = $NCPUS)"