diff --git a/grpc/protos/zoekt/webserver/v1/query.pb.go b/grpc/protos/zoekt/webserver/v1/query.pb.go
index f70430513..2cd1694d6 100644
--- a/grpc/protos/zoekt/webserver/v1/query.pb.go
+++ b/grpc/protos/zoekt/webserver/v1/query.pb.go
@@ -157,6 +157,7 @@ type Q struct {
 	//	*Q_Or
 	//	*Q_Not
 	//	*Q_Branch
+	//	*Q_Boost
 	Query isQ_Query `protobuf_oneof:"query"`
 }
 
@@ -318,6 +319,13 @@ func (x *Q) GetBranch() *Branch {
 	return nil
 }
 
+func (x *Q) GetBoost() *Boost {
+	if x, ok := x.GetQuery().(*Q_Boost); ok {
+		return x.Boost
+	}
+	return nil
+}
+
 type isQ_Query interface {
 	isQ_Query()
 }
@@ -390,6 +398,10 @@ type Q_Branch struct {
 	Branch *Branch `protobuf:"bytes,17,opt,name=branch,proto3,oneof"`
 }
 
+type Q_Boost struct {
+	Boost *Boost `protobuf:"bytes,18,opt,name=boost,proto3,oneof"`
+}
+
 func (*Q_RawConfig) isQ_Query() {}
 
 func (*Q_Regexp) isQ_Query() {}
@@ -424,6 +436,8 @@ func (*Q_Not) isQ_Query() {}
 
 func (*Q_Branch) isQ_Query() {}
 
+func (*Q_Boost) isQ_Query() {}
+
 // RawConfig filters repositories based on their encoded RawConfig map.
 type RawConfig struct {
 	state         protoimpl.MessageState
@@ -1315,13 +1329,69 @@ func (x *Branch) GetExact() bool {
 	return false
 }
 
+// Boost multiplies the score of its child by the boost factor.
+type Boost struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Child *Q      `protobuf:"bytes,1,opt,name=child,proto3" json:"child,omitempty"`
+	Boost float64 `protobuf:"fixed64,2,opt,name=boost,proto3" json:"boost,omitempty"`
+}
+
+func (x *Boost) Reset() {
+	*x = Boost{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_zoekt_webserver_v1_query_proto_msgTypes[18]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Boost) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Boost) ProtoMessage() {}
+
+func (x *Boost) ProtoReflect() protoreflect.Message {
+	mi := &file_zoekt_webserver_v1_query_proto_msgTypes[18]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Boost.ProtoReflect.Descriptor instead.
+func (*Boost) Descriptor() ([]byte, []int) {
+	return file_zoekt_webserver_v1_query_proto_rawDescGZIP(), []int{18}
+}
+
+func (x *Boost) GetChild() *Q {
+	if x != nil {
+		return x.Child
+	}
+	return nil
+}
+
+func (x *Boost) GetBoost() float64 {
+	if x != nil {
+		return x.Boost
+	}
+	return 0
+}
+
 var File_zoekt_webserver_v1_query_proto protoreflect.FileDescriptor
 
 var file_zoekt_webserver_v1_query_proto_rawDesc = []byte{
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 }
 
 var (
@@ -1488,7 +1566,7 @@ func file_zoekt_webserver_v1_query_proto_rawDescGZIP() []byte {
 }
 
 var file_zoekt_webserver_v1_query_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_zoekt_webserver_v1_query_proto_msgTypes = make([]protoimpl.MessageInfo, 19)
+var file_zoekt_webserver_v1_query_proto_msgTypes = make([]protoimpl.MessageInfo, 20)
 var file_zoekt_webserver_v1_query_proto_goTypes = []interface{}{
 	(RawConfig_Flag)(0),   // 0: zoekt.webserver.v1.RawConfig.Flag
 	(Type_Kind)(0),        // 1: zoekt.webserver.v1.Type.Kind
@@ -1510,7 +1588,8 @@ var file_zoekt_webserver_v1_query_proto_goTypes = []interface{}{
 	(*Or)(nil),            // 17: zoekt.webserver.v1.Or
 	(*Not)(nil),           // 18: zoekt.webserver.v1.Not
 	(*Branch)(nil),        // 19: zoekt.webserver.v1.Branch
-	nil,                   // 20: zoekt.webserver.v1.RepoSet.SetEntry
+	(*Boost)(nil),         // 20: zoekt.webserver.v1.Boost
+	nil,                   // 21: zoekt.webserver.v1.RepoSet.SetEntry
 }
 var file_zoekt_webserver_v1_query_proto_depIdxs = []int32{
 	3,  // 0: zoekt.webserver.v1.Q.raw_config:type_name -> zoekt.webserver.v1.RawConfig
@@ -1529,20 +1608,22 @@ var file_zoekt_webserver_v1_query_proto_depIdxs = []int32{
 	17, // 13: zoekt.webserver.v1.Q.or:type_name -> zoekt.webserver.v1.Or
 	18, // 14: zoekt.webserver.v1.Q.not:type_name -> zoekt.webserver.v1.Not
 	19, // 15: zoekt.webserver.v1.Q.branch:type_name -> zoekt.webserver.v1.Branch
-	0,  // 16: zoekt.webserver.v1.RawConfig.flags:type_name -> zoekt.webserver.v1.RawConfig.Flag
-	2,  // 17: zoekt.webserver.v1.Symbol.expr:type_name -> zoekt.webserver.v1.Q
-	10, // 18: zoekt.webserver.v1.BranchesRepos.list:type_name -> zoekt.webserver.v1.BranchRepos
-	20, // 19: zoekt.webserver.v1.RepoSet.set:type_name -> zoekt.webserver.v1.RepoSet.SetEntry
-	2,  // 20: zoekt.webserver.v1.Type.child:type_name -> zoekt.webserver.v1.Q
-	1,  // 21: zoekt.webserver.v1.Type.type:type_name -> zoekt.webserver.v1.Type.Kind
-	2,  // 22: zoekt.webserver.v1.And.children:type_name -> zoekt.webserver.v1.Q
-	2,  // 23: zoekt.webserver.v1.Or.children:type_name -> zoekt.webserver.v1.Q
-	2,  // 24: zoekt.webserver.v1.Not.child:type_name -> zoekt.webserver.v1.Q
-	25, // [25:25] is the sub-list for method output_type
-	25, // [25:25] is the sub-list for method input_type
-	25, // [25:25] is the sub-list for extension type_name
-	25, // [25:25] is the sub-list for extension extendee
-	0,  // [0:25] is the sub-list for field type_name
+	20, // 16: zoekt.webserver.v1.Q.boost:type_name -> zoekt.webserver.v1.Boost
+	0,  // 17: zoekt.webserver.v1.RawConfig.flags:type_name -> zoekt.webserver.v1.RawConfig.Flag
+	2,  // 18: zoekt.webserver.v1.Symbol.expr:type_name -> zoekt.webserver.v1.Q
+	10, // 19: zoekt.webserver.v1.BranchesRepos.list:type_name -> zoekt.webserver.v1.BranchRepos
+	21, // 20: zoekt.webserver.v1.RepoSet.set:type_name -> zoekt.webserver.v1.RepoSet.SetEntry
+	2,  // 21: zoekt.webserver.v1.Type.child:type_name -> zoekt.webserver.v1.Q
+	1,  // 22: zoekt.webserver.v1.Type.type:type_name -> zoekt.webserver.v1.Type.Kind
+	2,  // 23: zoekt.webserver.v1.And.children:type_name -> zoekt.webserver.v1.Q
+	2,  // 24: zoekt.webserver.v1.Or.children:type_name -> zoekt.webserver.v1.Q
+	2,  // 25: zoekt.webserver.v1.Not.child:type_name -> zoekt.webserver.v1.Q
+	2,  // 26: zoekt.webserver.v1.Boost.child:type_name -> zoekt.webserver.v1.Q
+	27, // [27:27] is the sub-list for method output_type
+	27, // [27:27] is the sub-list for method input_type
+	27, // [27:27] is the sub-list for extension type_name
+	27, // [27:27] is the sub-list for extension extendee
+	0,  // [0:27] is the sub-list for field type_name
 }
 
 func init() { file_zoekt_webserver_v1_query_proto_init() }
@@ -1767,6 +1848,18 @@ func file_zoekt_webserver_v1_query_proto_init() {
 				return nil
 			}
 		}
+		file_zoekt_webserver_v1_query_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Boost); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_zoekt_webserver_v1_query_proto_msgTypes[0].OneofWrappers = []interface{}{
 		(*Q_RawConfig)(nil),
@@ -1786,6 +1879,7 @@ func file_zoekt_webserver_v1_query_proto_init() {
 		(*Q_Or)(nil),
 		(*Q_Not)(nil),
 		(*Q_Branch)(nil),
+		(*Q_Boost)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -1793,7 +1887,7 @@ func file_zoekt_webserver_v1_query_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_zoekt_webserver_v1_query_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   19,
+			NumMessages:   20,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/grpc/protos/zoekt/webserver/v1/query.proto b/grpc/protos/zoekt/webserver/v1/query.proto
index 4ed08af15..308ad461e 100644
--- a/grpc/protos/zoekt/webserver/v1/query.proto
+++ b/grpc/protos/zoekt/webserver/v1/query.proto
@@ -23,6 +23,7 @@ message Q {
     Or or = 15;
     Not not = 16;
     Branch branch = 17;
+    Boost boost = 18;
   }
 }
 
@@ -141,3 +142,9 @@ message Branch {
   // exact is true if we want to Pattern to equal branch.
   bool exact = 2;
 }
+
+// Boost multiplies the score of its child by the boost factor.
+message Boost {
+  Q child = 1;
+  double boost = 2;
+}
diff --git a/query/query_proto.go b/query/query_proto.go
index 63f8a9dd4..f02a6fcd9 100644
--- a/query/query_proto.go
+++ b/query/query_proto.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/RoaringBitmap/roaring"
 	"github.com/grafana/regexp"
+
 	proto "github.com/sourcegraph/zoekt/grpc/protos/zoekt/webserver/v1"
 )
 
@@ -45,6 +46,8 @@ func QToProto(q Q) *proto.Q {
 		return &proto.Q{Query: &proto.Q_Not{Not: v.ToProto()}}
 	case *Branch:
 		return &proto.Q{Query: &proto.Q_Branch{Branch: v.ToProto()}}
+	case *Boost:
+		return &proto.Q{Query: &proto.Q_Boost{Boost: v.ToProto()}}
 	default:
 		// The following nodes do not have a proto representation:
 		// - GobCache: only needed for Gob encoding
@@ -89,6 +92,8 @@ func QFromProto(p *proto.Q) (Q, error) {
 		return NotFromProto(v.Not)
 	case *proto.Q_Branch:
 		return BranchFromProto(v.Branch), nil
+	case *proto.Q_Boost:
+		return BoostFromProto(v.Boost)
 	default:
 		panic(fmt.Sprintf("unknown query node %T", p.Query))
 	}
@@ -360,6 +365,24 @@ func (q *Or) ToProto() *proto.Or {
 	}
 }
 
+func BoostFromProto(p *proto.Boost) (*Boost, error) {
+	child, err := QFromProto(p.GetChild())
+	if err != nil {
+		return nil, err
+	}
+	return &Boost{
+		Child: child,
+		Boost: p.GetBoost(),
+	}, nil
+}
+
+func (q *Boost) ToProto() *proto.Boost {
+	return &proto.Boost{
+		Child: QToProto(q.Child),
+		Boost: q.Boost,
+	}
+}
+
 func NotFromProto(p *proto.Not) (*Not, error) {
 	child, err := QFromProto(p.GetChild())
 	if err != nil {
diff --git a/query/query_proto_test.go b/query/query_proto_test.go
index c5f0065fe..e1e8b8582 100644
--- a/query/query_proto_test.go
+++ b/query/query_proto_test.go
@@ -73,6 +73,20 @@ func TestQueryRoundtrip(t *testing.T) {
 		&Not{
 			Child: &Language{Language: "go"},
 		},
+		&Boost{
+			Child: &Or{
+				Children: []Q{
+					&And{
+						Children: []Q{
+							&Substring{Pattern: "foo"},
+							&Substring{Pattern: "bar"},
+						},
+					},
+					&Substring{Pattern: "foo bar"},
+				},
+			},
+			Boost: 20,
+		},
 	}
 
 	for _, q := range testCases {