diff --git a/go.mod b/go.mod
index a61252d5..9b539ce1 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,6 @@ go 1.17
 
 require (
 	github.com/Masterminds/semver/v3 v3.1.1
-	github.com/cockroachdb/apd v1.1.0
 	github.com/go-kit/log v0.1.0
 	github.com/gofrs/uuid v4.0.0+incompatible
 	github.com/jackc/chunkreader/v2 v2.0.1
@@ -30,10 +29,8 @@ require (
 	github.com/go-logfmt/logfmt v0.5.0 // indirect
 	github.com/go-stack/stack v1.8.0 // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/lib/pq v1.10.4 // indirect
 	github.com/mattn/go-colorable v0.1.12 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
-	github.com/pkg/errors v0.8.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	go.uber.org/atomic v1.5.0 // indirect
 	go.uber.org/multierr v1.3.0 // indirect
diff --git a/go.sum b/go.sum
index 97b704ee..1f7e7b63 100644
--- a/go.sum
+++ b/go.sum
@@ -2,7 +2,6 @@ github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
-github.com/cockroachdb/apd v1.1.0 h1:3LFP3629v+1aKXU5Q37mxmRxX/pIu1nijXydLShEq5I=
 github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
@@ -73,8 +72,6 @@ github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/lib/pq v1.1.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
-github.com/lib/pq v1.10.4 h1:SO9z7FRPzA03QhHKJrH5BXA6HU1rS4V2nIVrrNC1iYk=
-github.com/lib/pq v1.10.4/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/mattn/go-colorable v0.1.1/go.mod h1:FuOcm+DKB9mbwrcAfNl7/TZVBZ6rcnceauSikq3lYCQ=
 github.com/mattn/go-colorable v0.1.12 h1:jF+Du6AlPIjs2BiUiQlKOX0rt3SujHxPnksPKZbaA40=
 github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
diff --git a/query_test.go b/query_test.go
index 7157e5dd..71e05197 100644
--- a/query_test.go
+++ b/query_test.go
@@ -13,7 +13,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/cockroachdb/apd"
 	"github.com/gofrs/uuid"
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgconn"
@@ -1217,7 +1216,7 @@ func TestConnQueryDatabaseSQLDriverValuerWithAutoGeneratedPointerReceiver(t *tes
 
 	mustExec(t, conn, "create temporary table t(n numeric)")
 
-	var d *apd.Decimal
+	var d *sql.NullInt64
 	commandTag, err := conn.Exec(context.Background(), `insert into t(n) values($1)`, d)
 	if err != nil {
 		t.Fatal(err)