diff --git a/postgres-protocol/CHANGELOG.md b/postgres-protocol/CHANGELOG.md
index 375465b2..b099c1ff 100644
--- a/postgres-protocol/CHANGELOG.md
+++ b/postgres-protocol/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## v0.5.1 - 2020-03-17
+
+### Changed
+
+* Upgraded `base64` to 0.12.
+
 ## v0.5.0 - 2019-12-23
 
 ### Changed
diff --git a/postgres-protocol/Cargo.toml b/postgres-protocol/Cargo.toml
index 8fbd0093..ebad1aef 100644
--- a/postgres-protocol/Cargo.toml
+++ b/postgres-protocol/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "postgres-protocol"
-version = "0.5.0"
+version = "0.5.1"
 authors = ["Steven Fackler <sfackler@gmail.com>"]
 edition = "2018"
 description = "Low level Postgres protocol APIs"