diff --git a/lib/grpc/client/supervisor.ex b/lib/grpc/client/supervisor.ex
index 07832e56..099cba73 100644
--- a/lib/grpc/client/supervisor.ex
+++ b/lib/grpc/client/supervisor.ex
@@ -44,7 +44,16 @@ defmodule GRPC.Client.Supervisor do
   use DynamicSupervisor
 
   def start_link(opts) do
-    DynamicSupervisor.start_link(__MODULE__, opts, name: __MODULE__)
+    case DynamicSupervisor.start_link(__MODULE__, opts, name: __MODULE__) do
+      {:ok, _pid} = started ->
+        started
+
+      {:error, {:already_started, pid}} ->
+        {:ok, pid}
+
+      other ->
+        other
+    end
   end
 
   @impl true
diff --git a/test/grpc/client/supervisor_test.exs b/test/grpc/client/supervisor_test.exs
new file mode 100644
index 00000000..cd83c871
--- /dev/null
+++ b/test/grpc/client/supervisor_test.exs
@@ -0,0 +1,14 @@
+defmodule GRPC.Client.SupervisorTest do
+  use ExUnit.Case, async: false
+
+  alias GRPC.Client
+
+  describe "start_link/1" do
+    test "allows multiple start_links" do
+      {:ok, second_pid} = Client.Supervisor.start_link([])
+      {:ok, third_pid} = Client.Supervisor.start_link([])
+
+      assert second_pid == third_pid
+    end
+  end
+end