diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4c7fd2..a0b525b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## v0.5.1 (2017-11-07)
+
+* Fix `QueryMethods#query_one?` handling no rows. ([#86](https://github.com/crystal-lang/crystal-db/pull/86), thanks @robdavid)
+* Documentation improvements. ([#87](https://github.com/crystal-lang/crystal-db/pull/87), [#82](https://github.com/crystal-lang/crystal-db/pull/82), [#76](https://github.com/crystal-lang/crystal-db/pull/76), thanks @wontruefree, @Heaven31415, @vtambourine)
+
 ## v0.5.0 (2017-12-29)
 
 * Fix compatibility issues for crystal 0.24.0. No changes in the api.
diff --git a/shard.yml b/shard.yml
index 47b6878..e677375 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: db
-version: 0.5.0
+version: 0.5.1
 
 authors:
   - Brian J. Cardiff <bcardiff@manas.tech>
diff --git a/src/db/version.cr b/src/db/version.cr
index 925a6d8..5c7723f 100644
--- a/src/db/version.cr
+++ b/src/db/version.cr
@@ -1,3 +1,3 @@
 module DB
-  VERSION = "0.5.0"
+  VERSION = "0.5.1"
 end