diff --git a/internal/version/version.go b/internal/version/version.go
index cc749d856..086ddcfa8 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -2,4 +2,4 @@
 package version
 
 // Version is the ooniprobe version.
-const Version = "3.21.0"
+const Version = "3.21.1"