diff --git a/src/Curl.jl b/src/Curl.jl
index de79e04..a54f8b2 100644
--- a/src/Curl.jl
+++ b/src/Curl.jl
@@ -192,6 +192,7 @@ mutable struct gRPCRequest
         keepalive = 60,
         max_send_message_length = 4 * 1024 * 1024,
         max_recieve_message_length = 4 * 1024 * 1024,
+        token = nothing,
     )
         # Reduce number of available requests by one or block if its currently zero
         acquire(grpc.sem)
@@ -247,6 +248,9 @@ mutable struct gRPCRequest
         headers = curl_slist_append(headers, "te: trailers")
         headers =
             curl_slist_append(headers, "grpc-timeout: $(grpc_timeout_header_val(deadline))")
+        if !isnothing(token)
+            headers = curl_slist_append(headers, "Authorization: Bearer $(token)")
+        end
         curl_easy_setopt(easy_handle, CURLOPT_HTTPHEADER, headers)
 
         curl_easy_setopt(easy_handle, CURLOPT_TCP_KEEPALIVE, Clong(1))
diff --git a/src/ProtoBuf.jl b/src/ProtoBuf.jl
index 7391e40..74aff47 100644
--- a/src/ProtoBuf.jl
+++ b/src/ProtoBuf.jl
@@ -24,6 +24,7 @@ function service_codegen_handler(io, t::ServiceType, ctx::Context)
         println(io, "\tkeepalive=60,")
         println(io, "\tmax_send_message_length = 4*1024*1024,")
         println(io, "\tmax_recieve_message_length = 4*1024*1024,")
+        println(io, "\ttoken=nothing,")
         println(
             io,
             ") = gRPCServiceClient{$request_type, $(rpc.request_stream), $response_type, $(rpc.response_stream)}(",
@@ -35,6 +36,7 @@ function service_codegen_handler(io, t::ServiceType, ctx::Context)
         println(io, "\tkeepalive=keepalive,")
         println(io, "\tmax_send_message_length=max_send_message_length,")
         println(io, "\tmax_recieve_message_length=max_recieve_message_length,")
+        println(io, "\ttoken=token,")
         println(io, ")\n")
     end
 end
diff --git a/src/Streaming.jl b/src/Streaming.jl
index e2caa4b..41529a6 100644
--- a/src/Streaming.jl
+++ b/src/Streaming.jl
@@ -187,6 +187,7 @@ function grpc_async_request(
         keepalive = client.keepalive,
         max_send_message_length = client.max_send_message_length,
         max_recieve_message_length = client.max_recieve_message_length,
+        token = client.token,
     )
 
     request_task = Threads.@spawn grpc_async_stream_request(req, request)
@@ -244,6 +245,7 @@ function grpc_async_request(
         keepalive = client.keepalive,
         max_send_message_length = client.max_send_message_length,
         max_recieve_message_length = client.max_recieve_message_length,
+        token = client.token,
     )
 
     response_task = Threads.@spawn grpc_async_stream_response(req, response)
@@ -295,6 +297,7 @@ function grpc_async_request(
         keepalive = client.keepalive,
         max_send_message_length = client.max_send_message_length,
         max_recieve_message_length = client.max_recieve_message_length,
+        token = client.token,
     )
 
     request_task = Threads.@spawn grpc_async_stream_request(req, request)
diff --git a/src/Unary.jl b/src/Unary.jl
index 8fe5fa8..188e8d1 100644
--- a/src/Unary.jl
+++ b/src/Unary.jl
@@ -59,6 +59,7 @@ function grpc_async_request(
         keepalive = client.keepalive,
         max_send_message_length = client.max_send_message_length,
         max_recieve_message_length = client.max_recieve_message_length,
+        token = client.token,
     )
 
     req
@@ -129,6 +130,7 @@ function grpc_async_request(
         keepalive = client.keepalive,
         max_send_message_length = client.max_send_message_length,
         max_recieve_message_length = client.max_recieve_message_length,
+        token = client.token,
     )
 
     Threads.@spawn begin
diff --git a/src/gRPC.jl b/src/gRPC.jl
index e14e98b..fb648e4 100644
--- a/src/gRPC.jl
+++ b/src/gRPC.jl
@@ -59,6 +59,7 @@ struct gRPCServiceClient{TRequest,SRequest,TResponse,SResponse}
     keepalive::Float64
     max_send_message_length::Int64
     max_recieve_message_length::Int64
+    token::Union{Nothing,String}
 
     function gRPCServiceClient{TRequest,SRequest,TResponse,SResponse}(
         host,
@@ -70,6 +71,7 @@ struct gRPCServiceClient{TRequest,SRequest,TResponse,SResponse}
         keepalive = 60,
         max_send_message_length = 4 * 1024 * 1024,
         max_recieve_message_length = 4 * 1024 * 1024,
+        token = nothing,
     ) where {TRequest<:Any,SRequest,TResponse<:Any,SResponse}
         new(
             grpc,
@@ -81,6 +83,7 @@ struct gRPCServiceClient{TRequest,SRequest,TResponse,SResponse}
             keepalive,
             max_send_message_length,
             max_recieve_message_length,
+            token,
         )
     end