diff --git a/src/OpenTelemetry/.publicApi/net462/PublicAPI.Unshipped.txt b/src/OpenTelemetry/.publicApi/net462/PublicAPI.Unshipped.txt
index 65a037552..d4f822618 100644
--- a/src/OpenTelemetry/.publicApi/net462/PublicAPI.Unshipped.txt
+++ b/src/OpenTelemetry/.publicApi/net462/PublicAPI.Unshipped.txt
@@ -22,7 +22,6 @@ OpenTelemetry.OpenTelemetryBuilder.WithMetrics() -> OpenTelemetry.OpenTelemetryB
 OpenTelemetry.OpenTelemetryBuilder.WithMetrics(System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing() -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing(System.Action<OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
-OpenTelemetry.Resources.ResourceBuilder.AddDetector(System.Func<System.IServiceProvider?, OpenTelemetry.Resources.IResourceDetector!>! resourceDetectorFactory) -> OpenTelemetry.Resources.ResourceBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureBuilder(System.Action<System.IServiceProvider!, OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureServices(System.Action<Microsoft.Extensions.DependencyInjection.IServiceCollection!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.OpenTelemetryServiceCollectionExtensions
diff --git a/src/OpenTelemetry/.publicApi/net6.0/PublicAPI.Unshipped.txt b/src/OpenTelemetry/.publicApi/net6.0/PublicAPI.Unshipped.txt
index 65a037552..d4f822618 100644
--- a/src/OpenTelemetry/.publicApi/net6.0/PublicAPI.Unshipped.txt
+++ b/src/OpenTelemetry/.publicApi/net6.0/PublicAPI.Unshipped.txt
@@ -22,7 +22,6 @@ OpenTelemetry.OpenTelemetryBuilder.WithMetrics() -> OpenTelemetry.OpenTelemetryB
 OpenTelemetry.OpenTelemetryBuilder.WithMetrics(System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing() -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing(System.Action<OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
-OpenTelemetry.Resources.ResourceBuilder.AddDetector(System.Func<System.IServiceProvider?, OpenTelemetry.Resources.IResourceDetector!>! resourceDetectorFactory) -> OpenTelemetry.Resources.ResourceBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureBuilder(System.Action<System.IServiceProvider!, OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureServices(System.Action<Microsoft.Extensions.DependencyInjection.IServiceCollection!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.OpenTelemetryServiceCollectionExtensions
diff --git a/src/OpenTelemetry/.publicApi/netstandard2.0/PublicAPI.Unshipped.txt b/src/OpenTelemetry/.publicApi/netstandard2.0/PublicAPI.Unshipped.txt
index 65a037552..d4f822618 100644
--- a/src/OpenTelemetry/.publicApi/netstandard2.0/PublicAPI.Unshipped.txt
+++ b/src/OpenTelemetry/.publicApi/netstandard2.0/PublicAPI.Unshipped.txt
@@ -22,7 +22,6 @@ OpenTelemetry.OpenTelemetryBuilder.WithMetrics() -> OpenTelemetry.OpenTelemetryB
 OpenTelemetry.OpenTelemetryBuilder.WithMetrics(System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing() -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing(System.Action<OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
-OpenTelemetry.Resources.ResourceBuilder.AddDetector(System.Func<System.IServiceProvider?, OpenTelemetry.Resources.IResourceDetector!>! resourceDetectorFactory) -> OpenTelemetry.Resources.ResourceBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureBuilder(System.Action<System.IServiceProvider!, OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureServices(System.Action<Microsoft.Extensions.DependencyInjection.IServiceCollection!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.OpenTelemetryServiceCollectionExtensions
diff --git a/src/OpenTelemetry/.publicApi/netstandard2.1/PublicAPI.Unshipped.txt b/src/OpenTelemetry/.publicApi/netstandard2.1/PublicAPI.Unshipped.txt
index 65a037552..d4f822618 100644
--- a/src/OpenTelemetry/.publicApi/netstandard2.1/PublicAPI.Unshipped.txt
+++ b/src/OpenTelemetry/.publicApi/netstandard2.1/PublicAPI.Unshipped.txt
@@ -22,7 +22,6 @@ OpenTelemetry.OpenTelemetryBuilder.WithMetrics() -> OpenTelemetry.OpenTelemetryB
 OpenTelemetry.OpenTelemetryBuilder.WithMetrics(System.Action<OpenTelemetry.Metrics.MeterProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing() -> OpenTelemetry.OpenTelemetryBuilder!
 OpenTelemetry.OpenTelemetryBuilder.WithTracing(System.Action<OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.OpenTelemetryBuilder!
-OpenTelemetry.Resources.ResourceBuilder.AddDetector(System.Func<System.IServiceProvider?, OpenTelemetry.Resources.IResourceDetector!>! resourceDetectorFactory) -> OpenTelemetry.Resources.ResourceBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureBuilder(System.Action<System.IServiceProvider!, OpenTelemetry.Trace.TracerProviderBuilder!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.Trace.TracerProviderBuilderBase.ConfigureServices(System.Action<Microsoft.Extensions.DependencyInjection.IServiceCollection!>! configure) -> OpenTelemetry.Trace.TracerProviderBuilder!
 OpenTelemetry.OpenTelemetryServiceCollectionExtensions
diff --git a/src/OpenTelemetry/Resources/ResourceBuilder.cs b/src/OpenTelemetry/Resources/ResourceBuilder.cs
index 25f408bf6..44657001c 100644
--- a/src/OpenTelemetry/Resources/ResourceBuilder.cs
+++ b/src/OpenTelemetry/Resources/ResourceBuilder.cs
@@ -142,7 +142,8 @@ namespace OpenTelemetry.Resources
         /// </remarks>
         /// <param name="resourceDetectorFactory">Resource detector factory.</param>
         /// <returns>Supplied <see cref="ResourceBuilder"/> for call chaining.</returns>
-        public ResourceBuilder AddDetector(Func<IServiceProvider?, IResourceDetector> resourceDetectorFactory)
+        // Note: This API may be made public if there is a need for it.
+        internal ResourceBuilder AddDetector(Func<IServiceProvider?, IResourceDetector> resourceDetectorFactory)
         {
             Guard.ThrowIfNull(resourceDetectorFactory);