diff --git a/.librarian/generator-input/client-post-processing/spanner-integration.yaml b/.librarian/generator-input/client-post-processing/spanner-integration.yaml
index a7b4846e64da..3468bd3f567f 100644
--- a/.librarian/generator-input/client-post-processing/spanner-integration.yaml
+++ b/.librarian/generator-input/client-post-processing/spanner-integration.yaml
@@ -41,7 +41,10 @@ replacements:
   - paths: [packages/google-cloud-spanner/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py]
     before: '(from grpc\.experimental import aio  # type: ignore\n\n)(?!from google\.cloud\.spanner_v1\.metrics)'
     after: |
-      \g<1>from google.cloud.spanner_v1.metrics.metrics_interceptor import MetricsInterceptor
+      \g<1>from google.cloud.spanner_v1.metrics.metrics_interceptor import (
+          AsyncMetricsInterceptor,
+          MetricsInterceptor,
+      )
     count: 1
   
   - paths: [packages/google-cloud-spanner/google/cloud/spanner_v1/services/spanner/transports/grpc.py]
@@ -156,6 +159,32 @@ replacements:
 
       \g<3>\g<4>
     count: 1
+  - paths:
+      - packages/google-cloud-spanner/google/cloud/spanner_v1/services/spanner/transports/grpc_asyncio.py
+    before: '([ \t]+)(\("grpc\.keepalive_time_ms", 120000\),\n[ \t]+\](?:,\n[ \t]*|\n[ \t]*)\)\n+)([ \t]+)(self\._interceptor = _LoggingClientAIOInterceptor\(\)\n)'
+    after: |
+      \g<1>\g<2>\g<3>if metrics_interceptor is not None:
+                  self._metrics_interceptor = AsyncMetricsInterceptor()
+                  # Attach interceptor directly since grpc.aio does not provide intercept_channel.
+                  if hasattr(self._grpc_channel, "_unary_unary_interceptors"):
+                      self._grpc_channel._unary_unary_interceptors.append(
+                          self._metrics_interceptor
+                      )
+                  if hasattr(self._grpc_channel, "_unary_stream_interceptors"):
+                      self._grpc_channel._unary_stream_interceptors.append(
+                          self._metrics_interceptor
+                      )
+                  if hasattr(self._grpc_channel, "_stream_unary_interceptors"):
+                      self._grpc_channel._stream_unary_interceptors.append(
+                          self._metrics_interceptor
+                      )
+                  if hasattr(self._grpc_channel, "_stream_stream_interceptors"):
+                      self._grpc_channel._stream_stream_interceptors.append(
+                          self._metrics_interceptor
+                      )
+
+              self._interceptor = _LoggingClientAIOInterceptor()
+    count: 1
   - paths: [packages/google-cloud-spanner/setup.py]
     before: '(?s)dependencies = \[.*?\]\nextras = \{\s*\}'
     after: |