diff --git a/for-upstream/common.nix b/for-upstream/common.nix
index 495374dc..4e852b87 100644
--- a/for-upstream/common.nix
+++ b/for-upstream/common.nix
@@ -94,7 +94,7 @@ in
       type = types.str;
     };
     package = let
-      version = "0.6.5";
+      version = "0.6.6";
     in
       mkOption {
         description = "Package containing the bin/hercules-ci-agent program";
diff --git a/hercules-ci-agent/CHANGELOG.md b/hercules-ci-agent/CHANGELOG.md
index 3e82baf7..109e99bc 100644
--- a/hercules-ci-agent/CHANGELOG.md
+++ b/hercules-ci-agent/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.6.6] - 2020-03-16
+
 ### Fixed
 
  - NixOS, nix-darwin modules: check the `nix-daemon` source and add option to patch an in-memory cache expiry issue
@@ -227,6 +229,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release
 
+[0.6.6]: https://github.com/hercules-ci/hercules-ci-agent/compare/hercules-ci-agent-0.6.4...hercules-ci-agent-0.6.6
 [0.6.5]: https://github.com/hercules-ci/hercules-ci-agent/compare/hercules-ci-agent-0.6.3...hercules-ci-agent-0.6.5
 [0.6.4]: https://github.com/hercules-ci/hercules-ci-agent/compare/hercules-ci-agent-0.6.3...hercules-ci-agent-0.6.4
 [0.6.3]: https://github.com/hercules-ci/hercules-ci-agent/compare/hercules-ci-agent-0.6.2...hercules-ci-agent-0.6.3
diff --git a/hercules-ci-agent/hercules-ci-agent.cabal b/hercules-ci-agent/hercules-ci-agent.cabal
index 6497a1f4..2895c595 100644
--- a/hercules-ci-agent/hercules-ci-agent.cabal
+++ b/hercules-ci-agent/hercules-ci-agent.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.4
 
 name:           hercules-ci-agent
-version:        0.6.5
+version:        0.6.6
 homepage:       https://docs.hercules-ci.com
 bug-reports:    https://github.com/hercules-ci/hercules-ci-agent/issues
 author:         Hercules Labs
diff --git a/hercules-ci-agent/pkg.nix b/hercules-ci-agent/pkg.nix
index 7124e6e5..a346fa0a 100644
--- a/hercules-ci-agent/pkg.nix
+++ b/hercules-ci-agent/pkg.nix
@@ -63,7 +63,7 @@
 }:
 mkDerivation {
   pname = "hercules-ci-agent";
-  version = "0.6.5";
+  version = "0.6.6";
   src = ./hercules-ci-agent;
   isLibrary = true;
   isExecutable = true;