diff --git a/CHANGELOG.md b/CHANGELOG.md
index 16610f70b16..e4fb4c5b200 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1809])(https://github.com/open-telemetry/opentelemetry-python/pull/1809)
 - Fixed sequence values in OTLP exporter not translating
   ([#1818](https://github.com/open-telemetry/opentelemetry-python/pull/1818))
+- Update transient errors retry timeout and retryable status codes
+  ([#1842](https://github.com/open-telemetry/opentelemetry-python/pull/1842))
 
 ### Removed
 - Moved `opentelemetry-instrumentation` to contrib repository.
diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py
index f48a473fd00..be58cd82586 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py
@@ -262,14 +262,11 @@ def _translate_data(
         pass
 
     def _export(self, data: TypingSequence[SDKDataT]) -> ExportResultT:
+
+        max_value = 64
         # expo returns a generator that yields delay values which grow
         # exponentially. Once delay is greater than max_value, the yielded
         # value will remain constant.
-        # max_value is set to 900 (900 seconds is 15 minutes) to use the same
-        # value as used in the Go implementation.
-
-        max_value = 900
-
         for delay in expo(max_value=max_value):
 
             if delay == max_value:
@@ -289,8 +286,6 @@ def _export(self, data: TypingSequence[SDKDataT]) -> ExportResultT:
                 if error.code() in [
                     StatusCode.CANCELLED,
                     StatusCode.DEADLINE_EXCEEDED,
-                    StatusCode.PERMISSION_DENIED,
-                    StatusCode.UNAUTHENTICATED,
                     StatusCode.RESOURCE_EXHAUSTED,
                     StatusCode.ABORTED,
                     StatusCode.OUT_OF_RANGE,