diff --git a/HISTORY.md b/HISTORY.md
index 61af4ac..2e66aec 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,10 @@
 # History
 
+### v5.7.0 (November 24, 2025)
+
+More lenient sanitization for tag values, which can contain commas, slashes, and
+other characters that are not allowed in a metric name.
+
 ### v5.6.5 (October 14, 2025)
 
 The sanitization process introduced in the v5.6.0 release did not properly
diff --git a/version/version.go b/version/version.go
index 655f853..0333554 100644
--- a/version/version.go
+++ b/version/version.go
@@ -6,7 +6,7 @@ import (
 	"sync"
 )
 
-const Version = "5.6.5"
+const Version = "5.7.0"
 
 var (
 	vsnOnce sync.Once