diff --git a/db/config.cc b/db/config.cc
index 8f205bdf72..0b5c05b42d 100644
--- a/db/config.cc
+++ b/db/config.cc
@@ -970,6 +970,7 @@ db::config::config(std::shared_ptr<db::extensions> exts)
     , prometheus_port(this, "prometheus_port", value_status::Used, 9180, "Prometheus port, set to zero to disable.")
     , prometheus_address(this, "prometheus_address", value_status::Used, {/* listen_address */}, "Prometheus listening address, defaulting to listen_address if not explicitly set.")
     , prometheus_prefix(this, "prometheus_prefix", value_status::Used, "scylla", "Set the prefix of the exported Prometheus metrics. Changing this will break Scylla's dashboard compatibility, do not change unless you know what you are doing.")
+    , prometheus_allow_protobuf(this, "prometheus_allow_protobuf", value_status::Used, false, "If set allows the experimental Prometheus protobuf with native histogram")
     , abort_on_lsa_bad_alloc(this, "abort_on_lsa_bad_alloc", value_status::Used, false, "Abort when allocation in LSA region fails.")
     , murmur3_partitioner_ignore_msb_bits(this, "murmur3_partitioner_ignore_msb_bits", value_status::Used, default_murmur3_partitioner_ignore_msb_bits, "Number of most significant token bits to ignore in murmur3 partitioner; increase for very large clusters.")
     , unspooled_dirty_soft_limit(this, "unspooled_dirty_soft_limit", value_status::Used, 0.6, "Soft limit of unspooled dirty memory expressed as a portion of the hard limit.")
diff --git a/db/config.hh b/db/config.hh
index 7a6ab6486f..0aba325385 100644
--- a/db/config.hh
+++ b/db/config.hh
@@ -351,6 +351,7 @@ public:
     named_value<uint16_t> prometheus_port;
     named_value<sstring> prometheus_address;
     named_value<sstring> prometheus_prefix;
+    named_value<bool> prometheus_allow_protobuf;
     named_value<bool> abort_on_lsa_bad_alloc;
     named_value<unsigned> murmur3_partitioner_ignore_msb_bits;
     named_value<double> unspooled_dirty_soft_limit;