diff --git a/DESCRIPTION b/DESCRIPTION
index 6e90b6f..b98c8ee 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: mlr3tuningspaces
 Title: Search Spaces for 'mlr3'
-Version: 0.5.0.9000
+Version: 0.5.1
 Authors@R: c(
     person("Marc", "Becker", , "marcbecker@posteo.de", role = c("cre", "aut"),
            comment = c(ORCID = "0000-0002-8115-0400")),
diff --git a/NEWS.md b/NEWS.md
index dcc40ed..47fe50a 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# mlr3tuningspaces (development version)
+# mlr3tuningspaces 0.5.1
 
 * compatibility: Work with new mlr3tuning version 1.0.0