diff --git a/vendor/go.opentelemetry.io/otel/metric/syncint64.go b/vendor/go.opentelemetry.io/otel/metric/syncint64.go
new file mode 100644
index 0000000..783fdfb
--- /dev/null
+++ b/vendor/go.opentelemetry.io/otel/metric/syncint64.go
@@ -0,0 +1,226 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package metric // import "go.opentelemetry.io/otel/metric"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/metric/embedded"
+)
+
+// Int64Counter is an instrument that records increasing int64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64Counter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64Counter
+
+	// Add records a change to the counter.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Add(ctx context.Context, incr int64, options ...AddOption)
+}
+
+// Int64CounterConfig contains options for synchronous counter instruments that
+// record int64 values.
+type Int64CounterConfig struct {
+	description string
+	unit        string
+}
+
+// NewInt64CounterConfig returns a new [Int64CounterConfig] with all opts
+// applied.
+func NewInt64CounterConfig(opts ...Int64CounterOption) Int64CounterConfig {
+	var config Int64CounterConfig
+	for _, o := range opts {
+		config = o.applyInt64Counter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64CounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64CounterConfig) Unit() string {
+	return c.unit
+}
+
+// Int64CounterOption applies options to a [Int64CounterConfig]. See
+// [InstrumentOption] for other options that can be used as an
+// Int64CounterOption.
+type Int64CounterOption interface {
+	applyInt64Counter(Int64CounterConfig) Int64CounterConfig
+}
+
+// Int64UpDownCounter is an instrument that records increasing or decreasing
+// int64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64UpDownCounter interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64UpDownCounter
+
+	// Add records a change to the counter.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Add(ctx context.Context, incr int64, options ...AddOption)
+}
+
+// Int64UpDownCounterConfig contains options for synchronous counter
+// instruments that record int64 values.
+type Int64UpDownCounterConfig struct {
+	description string
+	unit        string
+}
+
+// NewInt64UpDownCounterConfig returns a new [Int64UpDownCounterConfig] with
+// all opts applied.
+func NewInt64UpDownCounterConfig(opts ...Int64UpDownCounterOption) Int64UpDownCounterConfig {
+	var config Int64UpDownCounterConfig
+	for _, o := range opts {
+		config = o.applyInt64UpDownCounter(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64UpDownCounterConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64UpDownCounterConfig) Unit() string {
+	return c.unit
+}
+
+// Int64UpDownCounterOption applies options to a [Int64UpDownCounterConfig].
+// See [InstrumentOption] for other options that can be used as an
+// Int64UpDownCounterOption.
+type Int64UpDownCounterOption interface {
+	applyInt64UpDownCounter(Int64UpDownCounterConfig) Int64UpDownCounterConfig
+}
+
+// Int64Histogram is an instrument that records a distribution of int64
+// values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64Histogram interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64Histogram
+
+	// Record adds an additional value to the distribution.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Record(ctx context.Context, incr int64, options ...RecordOption)
+}
+
+// Int64HistogramConfig contains options for synchronous histogram instruments
+// that record int64 values.
+type Int64HistogramConfig struct {
+	description              string
+	unit                     string
+	explicitBucketBoundaries []float64
+}
+
+// NewInt64HistogramConfig returns a new [Int64HistogramConfig] with all opts
+// applied.
+func NewInt64HistogramConfig(opts ...Int64HistogramOption) Int64HistogramConfig {
+	var config Int64HistogramConfig
+	for _, o := range opts {
+		config = o.applyInt64Histogram(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64HistogramConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64HistogramConfig) Unit() string {
+	return c.unit
+}
+
+// ExplicitBucketBoundaries returns the configured explicit bucket boundaries.
+func (c Int64HistogramConfig) ExplicitBucketBoundaries() []float64 {
+	return c.explicitBucketBoundaries
+}
+
+// Int64HistogramOption applies options to a [Int64HistogramConfig]. See
+// [InstrumentOption] for other options that can be used as an
+// Int64HistogramOption.
+type Int64HistogramOption interface {
+	applyInt64Histogram(Int64HistogramConfig) Int64HistogramConfig
+}
+
+// Int64Gauge is an instrument that records instantaneous int64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64Gauge interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64Gauge
+
+	// Record records the instantaneous value.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Record(ctx context.Context, value int64, options ...RecordOption)
+}
+
+// Int64GaugeConfig contains options for synchronous gauge instruments that
+// record int64 values.
+type Int64GaugeConfig struct {
+	description string
+	unit        string
+}
+
+// NewInt64GaugeConfig returns a new [Int64GaugeConfig] with all opts
+// applied.
+func NewInt64GaugeConfig(opts ...Int64GaugeOption) Int64GaugeConfig {
+	var config Int64GaugeConfig
+	for _, o := range opts {
+		config = o.applyInt64Gauge(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64GaugeConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64GaugeConfig) Unit() string {
+	return c.unit
+}
+
+// Int64GaugeOption applies options to a [Int64GaugeConfig]. See
+// [InstrumentOption] for other options that can be used as a
+// Int64GaugeOption.
+type Int64GaugeOption interface {
+	applyInt64Gauge(Int64GaugeConfig) Int64GaugeConfig
+}