diff --git a/docs/src/manpage.md b/docs/src/manpage.md
index 59ee1aebb..0f5d34ee9 100644
--- a/docs/src/manpage.md
+++ b/docs/src/manpage.md
@@ -50,7 +50,7 @@ DESCRIPTION
        insertion-ordered hash map.  This encompasses a variety of data
        formats, including but not limited to the familiar CSV, TSV, and JSON.
        (Miller can handle positionally-indexed data as a special case.) This
-       manpage documents mlr 6.3.0-dev.
+       manpage documents mlr 6.4.0.
 
 EXAMPLES
        mlr --icsv --opprint cat example.csv
diff --git a/docs/src/manpage.txt b/docs/src/manpage.txt
index 8fb88d820..644b0ae27 100644
--- a/docs/src/manpage.txt
+++ b/docs/src/manpage.txt
@@ -29,7 +29,7 @@ DESCRIPTION
        insertion-ordered hash map.  This encompasses a variety of data
        formats, including but not limited to the familiar CSV, TSV, and JSON.
        (Miller can handle positionally-indexed data as a special case.) This
-       manpage documents mlr 6.3.0-dev.
+       manpage documents mlr 6.4.0.
 
 EXAMPLES
        mlr --icsv --opprint cat example.csv
diff --git a/internal/pkg/version/version.go b/internal/pkg/version/version.go
index cb44eead0..95a2bb0c0 100644
--- a/internal/pkg/version/version.go
+++ b/internal/pkg/version/version.go
@@ -4,4 +4,4 @@ package version
 // Nominally things like "6.0.0" for a release, then "6.0.0-dev" in between.
 // This makes it clear that a given build is on the main dev branch, not a
 // particular snapshot tag.
-var STRING string = "6.3.0-dev"
+var STRING string = "6.4.0"
diff --git a/man/manpage.txt b/man/manpage.txt
index 8fb88d820..644b0ae27 100644
--- a/man/manpage.txt
+++ b/man/manpage.txt
@@ -29,7 +29,7 @@ DESCRIPTION
        insertion-ordered hash map.  This encompasses a variety of data
        formats, including but not limited to the familiar CSV, TSV, and JSON.
        (Miller can handle positionally-indexed data as a special case.) This
-       manpage documents mlr 6.3.0-dev.
+       manpage documents mlr 6.4.0.
 
 EXAMPLES
        mlr --icsv --opprint cat example.csv
diff --git a/man/mlr.1 b/man/mlr.1
index 7c405657b..98d273d92 100644
--- a/man/mlr.1
+++ b/man/mlr.1
@@ -47,7 +47,7 @@ on integer-indexed fields: if the natural data structure for the latter is the
 array, then Miller's natural data structure is the insertion-ordered hash map.
 This encompasses a variety of data formats, including but not limited to the
 familiar CSV, TSV, and JSON.  (Miller can handle positionally-indexed data as
-a special case.) This manpage documents mlr 6.3.0-dev.
+a special case.) This manpage documents mlr 6.4.0.
 .SH "EXAMPLES"
 .sp
 
diff --git a/miller.spec b/miller.spec
index c98f383c1..545bb4ee4 100644
--- a/miller.spec
+++ b/miller.spec
@@ -1,6 +1,6 @@
 Summary: Name-indexed data processing tool
 Name: miller
-Version: 6.3.0
+Version: 6.4.0
 Release: 1%{?dist}
 License: BSD
 Source: https://github.com/johnkerl/miller/releases/download/%{version}/miller-%{version}.tar.gz
@@ -36,6 +36,9 @@ make install
 %{_mandir}/man1/mlr.1*
 
 %changelog
+* Sat Aug 20 2022 John Kerl <kerl.john.r@gmail.com> - 6.4.0-1
+- 6.4.0 release
+
 * Thu Jul 7 2022 John Kerl <kerl.john.r@gmail.com> - 6.3.0-1
 - 6.3.0 release