diff --git a/src/test/regress/expected/stats.out b/src/test/regress/expected/stats.out
index 8e63340782..319164a5e9 100644
--- a/src/test/regress/expected/stats.out
+++ b/src/test/regress/expected/stats.out
@@ -1385,7 +1385,11 @@ SELECT :io_sum_local_new_tblspc_writes > :io_sum_local_after_writes;
 
 RESET temp_buffers;
 -- Test that reuse of strategy buffers and reads of blocks into these reused
--- buffers while VACUUMing are tracked in pg_stat_io.
+-- buffers while VACUUMing are tracked in pg_stat_io. If there is sufficient
+-- demand for shared buffers from concurrent queries, some buffers may be
+-- pinned by other backends before they can be reused. In such cases, the
+-- backend will evict a buffer from outside the ring and add it to the
+-- ring. This is considered an eviction and not a reuse.
 -- Set wal_skip_threshold smaller than the expected size of
 -- test_io_vac_strategy so that, even if wal_level is minimal, VACUUM FULL will
 -- fsync the newly rewritten test_io_vac_strategy instead of writing it to WAL.
@@ -1393,15 +1397,15 @@ RESET temp_buffers;
 -- shared buffers -- preventing us from testing BAS_VACUUM BufferAccessStrategy
 -- reads.
 SET wal_skip_threshold = '1 kB';
-SELECT sum(reuses) AS reuses, sum(reads) AS reads
+SELECT sum(reuses) AS reuses, sum(reads) AS reads, sum(evictions) AS evictions
   FROM pg_stat_io WHERE context = 'vacuum' \gset io_sum_vac_strategy_before_
 CREATE TABLE test_io_vac_strategy(a int, b int) WITH (autovacuum_enabled = 'false');
 INSERT INTO test_io_vac_strategy SELECT i, i from generate_series(1, 4500)i;
 -- Ensure that the next VACUUM will need to perform IO by rewriting the table
 -- first with VACUUM (FULL).
 VACUUM (FULL) test_io_vac_strategy;
--- Use the minimum BUFFER_USAGE_LIMIT to cause reuses with the smallest table
--- possible.
+-- Use the minimum BUFFER_USAGE_LIMIT to cause reuses or evictions with the
+-- smallest table possible.
 VACUUM (PARALLEL 0, BUFFER_USAGE_LIMIT 128) test_io_vac_strategy;
 SELECT pg_stat_force_next_flush();
  pg_stat_force_next_flush 
@@ -1409,13 +1413,19 @@ SELECT pg_stat_force_next_flush();
  
 (1 row)
 
-SELECT sum(reuses) AS reuses, sum(reads) AS reads
+SELECT sum(reuses) AS reuses, sum(reads) AS reads, sum(evictions) AS evictions
   FROM pg_stat_io WHERE context = 'vacuum' \gset io_sum_vac_strategy_after_
-SELECT :io_sum_vac_strategy_after_reads > :io_sum_vac_strategy_before_reads,
-       :io_sum_vac_strategy_after_reuses > :io_sum_vac_strategy_before_reuses;
- ?column? | ?column? 
-----------+----------
- t        | t
+SELECT :io_sum_vac_strategy_after_reads > :io_sum_vac_strategy_before_reads;
+ ?column? 
+----------
+ t
+(1 row)
+
+SELECT (:io_sum_vac_strategy_after_reuses + :io_sum_vac_strategy_after_evictions) >
+  (:io_sum_vac_strategy_before_reuses + :io_sum_vac_strategy_before_evictions);
+ ?column? 
+----------
+ t
 (1 row)
 
 RESET wal_skip_threshold;
diff --git a/src/test/regress/sql/stats.sql b/src/test/regress/sql/stats.sql
index fddf5a8277..9a16df1c49 100644
--- a/src/test/regress/sql/stats.sql
+++ b/src/test/regress/sql/stats.sql
@@ -678,7 +678,11 @@ SELECT :io_sum_local_new_tblspc_writes > :io_sum_local_after_writes;
 RESET temp_buffers;
 
 -- Test that reuse of strategy buffers and reads of blocks into these reused
--- buffers while VACUUMing are tracked in pg_stat_io.
+-- buffers while VACUUMing are tracked in pg_stat_io. If there is sufficient
+-- demand for shared buffers from concurrent queries, some buffers may be
+-- pinned by other backends before they can be reused. In such cases, the
+-- backend will evict a buffer from outside the ring and add it to the
+-- ring. This is considered an eviction and not a reuse.
 
 -- Set wal_skip_threshold smaller than the expected size of
 -- test_io_vac_strategy so that, even if wal_level is minimal, VACUUM FULL will
@@ -687,21 +691,22 @@ RESET temp_buffers;
 -- shared buffers -- preventing us from testing BAS_VACUUM BufferAccessStrategy
 -- reads.
 SET wal_skip_threshold = '1 kB';
-SELECT sum(reuses) AS reuses, sum(reads) AS reads
+SELECT sum(reuses) AS reuses, sum(reads) AS reads, sum(evictions) AS evictions
   FROM pg_stat_io WHERE context = 'vacuum' \gset io_sum_vac_strategy_before_
 CREATE TABLE test_io_vac_strategy(a int, b int) WITH (autovacuum_enabled = 'false');
 INSERT INTO test_io_vac_strategy SELECT i, i from generate_series(1, 4500)i;
 -- Ensure that the next VACUUM will need to perform IO by rewriting the table
 -- first with VACUUM (FULL).
 VACUUM (FULL) test_io_vac_strategy;
--- Use the minimum BUFFER_USAGE_LIMIT to cause reuses with the smallest table
--- possible.
+-- Use the minimum BUFFER_USAGE_LIMIT to cause reuses or evictions with the
+-- smallest table possible.
 VACUUM (PARALLEL 0, BUFFER_USAGE_LIMIT 128) test_io_vac_strategy;
 SELECT pg_stat_force_next_flush();
-SELECT sum(reuses) AS reuses, sum(reads) AS reads
+SELECT sum(reuses) AS reuses, sum(reads) AS reads, sum(evictions) AS evictions
   FROM pg_stat_io WHERE context = 'vacuum' \gset io_sum_vac_strategy_after_
-SELECT :io_sum_vac_strategy_after_reads > :io_sum_vac_strategy_before_reads,
-       :io_sum_vac_strategy_after_reuses > :io_sum_vac_strategy_before_reuses;
+SELECT :io_sum_vac_strategy_after_reads > :io_sum_vac_strategy_before_reads;
+SELECT (:io_sum_vac_strategy_after_reuses + :io_sum_vac_strategy_after_evictions) >
+  (:io_sum_vac_strategy_before_reuses + :io_sum_vac_strategy_before_evictions);
 RESET wal_skip_threshold;
 
 -- Test that extends done by a CTAS, which uses a BAS_BULKWRITE