diff --git a/bin/pg_repack.c b/bin/pg_repack.c
index cb382b8..8ccb1ae 100644
--- a/bin/pg_repack.c
+++ b/bin/pg_repack.c
@@ -66,6 +66,7 @@ const char *PROGRAM_VERSION = "unknown";
  *     https://github.com/reorg/pg_repack/issues/1
  *  d. open transactions/locks existing on other databases than the actual
  *     processing relation (except for locks on shared objects)
+ *  e. VACUUMs which are always executed outside transaction blocks.
  *
  * Note, there is some redundancy in how the filtering is done (e.g. excluding
  * based on pg_backend_pid() and application_name), but that shouldn't hurt
@@ -84,6 +85,8 @@ const char *PROGRAM_VERSION = "unknown";
 	"  AND l.pid NOT IN (pg_backend_pid(), $1) " \
 	"  AND (l.virtualxid, l.virtualtransaction) <> ('1/1', '-1/0') " \
 	"  AND (a.application_name IS NULL OR a.application_name <> $2)" \
+	"  AND a.query !~* E'^\\\\s*vacuum\\\\s+' " \
+	"  AND a.query !~ E'^autovacuum: ' " \
 	"  AND ((d.datname IS NULL OR d.datname = current_database()) OR l.database = 0)"
 
 #define SQL_XID_SNAPSHOT_90000 \
@@ -97,6 +100,8 @@ const char *PROGRAM_VERSION = "unknown";
 	"  AND l.pid NOT IN (pg_backend_pid(), $1) " \
 	"  AND (l.virtualxid, l.virtualtransaction) <> ('1/1', '-1/0') " \
 	"  AND (a.application_name IS NULL OR a.application_name <> $2)" \
+	"  AND a.query !~* E'^\\\\s*vacuum\\\\s+' " \
+	"  AND a.query !~ E'^autovacuum: ' " \
 	"  AND ((d.datname IS NULL OR d.datname = current_database()) OR l.database = 0)"
 
 /* application_name is not available before 9.0. The last clause of
@@ -111,6 +116,8 @@ const char *PROGRAM_VERSION = "unknown";
 	"    ON a.datid = d.oid " \
 	" WHERE l.locktype = 'virtualxid' AND l.pid NOT IN (pg_backend_pid(), $1)" \
 	" AND (l.virtualxid, l.virtualtransaction) <> ('1/1', '-1/0') " \
+	" AND a.query !~* E'^\\\\s*vacuum\\\\s+' " \
+	" AND a.query !~ E'^autovacuum: ' " \
 	" AND ((d.datname IS NULL OR d.datname = current_database()) OR l.database = 0)" \
 	" AND ($2::text IS NOT NULL)"