diff --git a/Dockerfile b/Dockerfile
index 8ebf47d..956cc30 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -95,7 +95,8 @@ COPY --from=builder /usr/local/lib/postgresql/ /usr/local/lib/postgresql/
 COPY --from=builder /usr/local/share/postgresql/ /usr/local/share/postgresql/
 
 # Preload extensions that require shared_preload_libraries
-RUN echo "shared_preload_libraries = 'pg_textsearch,pg_cron,pg_partman_bgw'" >> /usr/local/share/postgresql/postgresql.conf.sample
+RUN echo "shared_preload_libraries = 'pg_stat_statements,pg_textsearch,pg_cron,pg_partman_bgw'" >> /usr/local/share/postgresql/postgresql.conf.sample && \
+    echo "track_io_timing = on" >> /usr/local/share/postgresql/postgresql.conf.sample
 
 LABEL org.opencontainers.image.source="https://github.com/constructive-io/docker"
-LABEL org.opencontainers.image.description="PostgreSQL 18 with pgvector, PostGIS, pg_textsearch, pg_cron, and pg_partman"
+LABEL org.opencontainers.image.description="PostgreSQL 18 with pgvector, PostGIS, pg_textsearch, pg_cron, pg_partman, and pg_stat_statements"
diff --git a/README.md b/README.md
index 1f2fa06..7170182 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ Lean PostgreSQL 18 image with essential extensions for modern applications.
 | [pg_textsearch](https://github.com/timescale/pg_textsearch) | 1.2.0 | BM25 full-text search |
 | [pg_cron](https://github.com/citusdata/pg_cron) | 1.6.7 | Job scheduler for periodic tasks |
 | [pg_partman](https://github.com/pgpartman/pg_partman) | 5.4.3 | Partition management |
+| [pg_stat_statements](https://www.postgresql.org/docs/current/pgstatstatements.html) | built-in | Query performance statistics |
 
 ## Usage
 
@@ -40,8 +41,13 @@ CREATE EXTENSION postgis;
 CREATE EXTENSION pg_textsearch;
 CREATE EXTENSION pg_cron;
 CREATE EXTENSION pg_partman;
+CREATE EXTENSION pg_stat_statements;
 ```
 
+## Configuration
+
+`track_io_timing` is enabled by default for accurate I/O metrics in `pg_stat_statements`. This powers the usage metering and query stats collection pipeline.
+
 ## Build
 
 ```bash