diff --git a/ir/queries/queries.sql b/ir/queries/queries.sql
index 60ec9800..44a31d8b 100644
--- a/ir/queries/queries.sql
+++ b/ir/queries/queries.sql
@@ -2026,6 +2026,7 @@ WITH acl_data AS (
         c.relname::text AS object_name,
         CASE c.relkind
             WHEN 'r' THEN 'TABLE'
+            WHEN 'p' THEN 'TABLE'
             WHEN 'v' THEN 'VIEW'
             WHEN 'm' THEN 'VIEW'
             WHEN 'S' THEN 'SEQUENCE'
@@ -2044,7 +2045,7 @@ WITH acl_data AS (
                 AND dep.refobjsubid = 0
                 AND dep.deptype = 'e'
         )
-        AND c.relkind IN ('r', 'v', 'm', 'S')
+        AND c.relkind IN ('r', 'p', 'v', 'm', 'S')
         AND c.relacl IS NOT NULL
         -- SERIAL/identity sequences inherit the owning extension table's boundary.
         AND NOT EXISTS (
@@ -2267,7 +2268,7 @@ WITH column_acls AS (
                 AND dep.refobjsubid = 0
                 AND dep.deptype = 'e'
         )
-        AND c.relkind IN ('r', 'v', 'm')  -- tables, views, materialized views
+        AND c.relkind IN ('r', 'p', 'v', 'm')  -- ordinary/partitioned tables, views, materialized views
         AND a.attnum > 0                   -- skip system columns
         AND NOT a.attisdropped
         AND a.attacl IS NOT NULL           -- only columns with explicit ACL
diff --git a/ir/queries/queries.sql.go b/ir/queries/queries.sql.go
index 2dfc73e3..3707333b 100644
--- a/ir/queries/queries.sql.go
+++ b/ir/queries/queries.sql.go
@@ -337,7 +337,7 @@ WITH column_acls AS (
                 AND dep.refobjsubid = 0
                 AND dep.deptype = 'e'
         )
-        AND c.relkind IN ('r', 'v', 'm')  -- tables, views, materialized views
+        AND c.relkind IN ('r', 'p', 'v', 'm')  -- ordinary/partitioned tables, views, materialized views
         AND a.attnum > 0                   -- skip system columns
         AND NOT a.attisdropped
         AND a.attacl IS NOT NULL           -- only columns with explicit ACL
@@ -2601,6 +2601,7 @@ WITH acl_data AS (
         c.relname::text AS object_name,
         CASE c.relkind
             WHEN 'r' THEN 'TABLE'
+            WHEN 'p' THEN 'TABLE'
             WHEN 'v' THEN 'VIEW'
             WHEN 'm' THEN 'VIEW'
             WHEN 'S' THEN 'SEQUENCE'
@@ -2619,7 +2620,7 @@ WITH acl_data AS (
                 AND dep.refobjsubid = 0
                 AND dep.deptype = 'e'
         )
-        AND c.relkind IN ('r', 'v', 'm', 'S')
+        AND c.relkind IN ('r', 'p', 'v', 'm', 'S')
         AND c.relacl IS NOT NULL
         -- SERIAL/identity sequences inherit the owning extension table's boundary.
         AND NOT EXISTS (
diff --git a/testdata/diff/privilege/issue_640_partitioned_table_grant/diff.sql b/testdata/diff/privilege/issue_640_partitioned_table_grant/diff.sql
new file mode 100644
index 00000000..a2f79ee9
--- /dev/null
+++ b/testdata/diff/privilege/issue_640_partitioned_table_grant/diff.sql
@@ -0,0 +1,5 @@
+REVOKE INSERT ON TABLE events FROM reader;
+
+GRANT SELECT ON TABLE events TO reader;
+
+GRANT UPDATE (at) ON TABLE events TO reader;
diff --git a/testdata/diff/privilege/issue_640_partitioned_table_grant/new.sql b/testdata/diff/privilege/issue_640_partitioned_table_grant/new.sql
new file mode 100644
index 00000000..dffb4df0
--- /dev/null
+++ b/testdata/diff/privilege/issue_640_partitioned_table_grant/new.sql
@@ -0,0 +1,16 @@
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'reader') THEN
+        CREATE ROLE reader;
+    END IF;
+END $$;
+
+CREATE TABLE events (
+    id int NOT NULL,
+    at date NOT NULL
+) PARTITION BY RANGE (at);
+
+CREATE TABLE events_2026_01 PARTITION OF events FOR VALUES FROM ('2026-01-01') TO ('2026-02-01');
+
+GRANT SELECT ON events TO reader;
+GRANT UPDATE (at) ON events TO reader;
diff --git a/testdata/diff/privilege/issue_640_partitioned_table_grant/old.sql b/testdata/diff/privilege/issue_640_partitioned_table_grant/old.sql
new file mode 100644
index 00000000..be37dcab
--- /dev/null
+++ b/testdata/diff/privilege/issue_640_partitioned_table_grant/old.sql
@@ -0,0 +1,15 @@
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'reader') THEN
+        CREATE ROLE reader;
+    END IF;
+END $$;
+
+CREATE TABLE events (
+    id int NOT NULL,
+    at date NOT NULL
+) PARTITION BY RANGE (at);
+
+CREATE TABLE events_2026_01 PARTITION OF events FOR VALUES FROM ('2026-01-01') TO ('2026-02-01');
+
+GRANT INSERT ON events TO reader;
diff --git a/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.json b/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.json
new file mode 100644
index 00000000..3feb2e03
--- /dev/null
+++ b/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.json
@@ -0,0 +1,32 @@
+{
+  "version": "1.0.0",
+  "pgschema_version": "1.13.1",
+  "created_at": "1970-01-01T00:00:00Z",
+  "source_fingerprint": {
+    "hash": "c3d943f90b64cc5a2c206d2e949b575b0f2b0b4d6c2daf9cd3d525764d33eb36"
+  },
+  "groups": [
+    {
+      "steps": [
+        {
+          "sql": "REVOKE INSERT ON TABLE events FROM reader;",
+          "type": "privilege",
+          "operation": "alter",
+          "path": "privileges.TABLE.events.reader"
+        },
+        {
+          "sql": "GRANT SELECT ON TABLE events TO reader;",
+          "type": "privilege",
+          "operation": "alter",
+          "path": "privileges.TABLE.events.reader"
+        },
+        {
+          "sql": "GRANT UPDATE (at) ON TABLE events TO reader;",
+          "type": "column_privilege",
+          "operation": "create",
+          "path": "column_privileges.TABLE.events.at.reader"
+        }
+      ]
+    }
+  ]
+}
diff --git a/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.sql b/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.sql
new file mode 100644
index 00000000..a2f79ee9
--- /dev/null
+++ b/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.sql
@@ -0,0 +1,5 @@
+REVOKE INSERT ON TABLE events FROM reader;
+
+GRANT SELECT ON TABLE events TO reader;
+
+GRANT UPDATE (at) ON TABLE events TO reader;
diff --git a/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.txt b/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.txt
new file mode 100644
index 00000000..e88315e0
--- /dev/null
+++ b/testdata/diff/privilege/issue_640_partitioned_table_grant/plan.txt
@@ -0,0 +1,21 @@
+Plan: 1 to add, 2 to modify.
+
+Summary by type:
+  privileges: 2 to modify
+  column privileges: 1 to add
+
+Privileges:
+  ~ reader
+  ~ reader
+
+Column privileges:
+  + reader
+
+DDL to be executed:
+--------------------------------------------------
+
+REVOKE INSERT ON TABLE events FROM reader;
+
+GRANT SELECT ON TABLE events TO reader;
+
+GRANT UPDATE (at) ON TABLE events TO reader;