diff --git a/go.mod b/go.mod
index efcfd9af..b467e7f4 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@ module github.com/jackc/pgx/v5
 go 1.17
 
 require (
-	github.com/jackc/chunkreader/v2 v2.0.1
 	github.com/jackc/pgio v1.0.0
 	github.com/jackc/pgpassfile v1.0.0
 	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b
diff --git a/go.sum b/go.sum
index 0e049ef2..0931401b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,8 +1,6 @@
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/jackc/chunkreader/v2 v2.0.1 h1:i+RDz65UE+mmpjTfyz0MoVTnzeYxroil2G82ki7MGG8=
-github.com/jackc/chunkreader/v2 v2.0.1/go.mod h1:odVSm741yZoC3dpHEUXIqA9tQRhFrgOHwnPIn9lDKlk=
 github.com/jackc/pgio v1.0.0 h1:g12B9UwVnzGhueNavwioyEEpAmqMe1E/BN9ES+8ovkE=
 github.com/jackc/pgio v1.0.0/go.mod h1:oP+2QK2wFfUWgr+gxjoBH9KGBb31Eio69xUb0w5bYf8=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
diff --git a/pgconn/config.go b/pgconn/config.go
index 6c166834..6f7f3ca5 100644
--- a/pgconn/config.go
+++ b/pgconn/config.go
@@ -17,9 +17,9 @@ import (
 	"strings"
 	"time"
 
-	"github.com/jackc/chunkreader/v2"
 	"github.com/jackc/pgpassfile"
 	"github.com/jackc/pgservicefile"
+	"github.com/jackc/pgx/v5/chunkreader"
 	"github.com/jackc/pgx/v5/pgproto3"
 )
 
diff --git a/pgproto3/chunkreader.go b/pgproto3/chunkreader.go
index 92206f35..3f878183 100644
--- a/pgproto3/chunkreader.go
+++ b/pgproto3/chunkreader.go
@@ -3,7 +3,7 @@ package pgproto3
 import (
 	"io"
 
-	"github.com/jackc/chunkreader/v2"
+	"github.com/jackc/pgx/v5/chunkreader"
 )
 
 // ChunkReader is an interface to decouple github.com/jackc/chunkreader from this package.