diff --git a/scripts/build/.variables b/scripts/build/.variables
index 76b0602f06..f14e54f2f4 100755
--- a/scripts/build/.variables
+++ b/scripts/build/.variables
@@ -12,7 +12,15 @@ TARGET=${TARGET:-"build"}
 PLATFORM=${PLATFORM:-}
 VERSION=${VERSION:-$(git describe --match 'v[0-9]*' --dirty='.m' --always --tags | sed 's/^v//' 2>/dev/null || echo "unknown-version" )}
 GITCOMMIT=${GITCOMMIT:-$(git rev-parse --short HEAD 2> /dev/null || true)}
-BUILDTIME=${BUILDTIME:-$(date -u --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" +"%Y-%m-%dT%H:%M:%SZ")}
+
+if [ "$(uname)" = "Darwin" ]; then
+    # Using BSD date (macOS), which doesn't suppoort the --date option
+    # date -jf "<input format>" "<input value>" +"<output format>" (https://unix.stackexchange.com/a/86510)
+    BUILDTIME=${BUILDTIME:-$(TZ=UTC date -jf "%s" "${SOURCE_DATE_EPOCH:-$(date +%s)}" +"%Y-%m-%dT%H:%M:%SZ")}
+else
+    # Using GNU date (Linux)
+    BUILDTIME=${BUILDTIME:-$(TZ=UTC date -u --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" +"%Y-%m-%dT%H:%M:%SZ")}
+fi
 
 GOOS="$(go env GOOS)"
 GOARCH="$(go env GOARCH)"