diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 816df2d..2537c1f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.3.1"
+  ".": "0.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 575c803..0eaa882 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,13 @@ pull requests (see [docs/releasing.md](docs/releasing.md)); the design
 record is [docs/PLAN.md](docs/PLAN.md). Until v1.0.0, minor versions may
 change the API.
 
+## [0.4.0](https://github.com/parallelworks/hopper/compare/v0.3.1...v0.4.0) (2026-10-02)
+
+
+### Features
+
+* **core:** a configurable client lease, and a job on its last attempt survives a lost lease ([#44](https://github.com/parallelworks/hopper/issues/44)) ([23abd36](https://github.com/parallelworks/hopper/commit/23abd367e46255d17a9137e02a58083749d6d0e0))
+
 ## [0.3.1](https://github.com/parallelworks/hopper/compare/v0.3.0...v0.3.1) (2026-10-02)
 
 
diff --git a/hopperotel/go.mod b/hopperotel/go.mod
index 77dac09..726c4a7 100644
--- a/hopperotel/go.mod
+++ b/hopperotel/go.mod
@@ -5,7 +5,7 @@ go 1.27.0
 godebug fips140=only
 
 require (
-	github.com/parallelworks/hopper v0.3.1 // x-release-please-version
+	github.com/parallelworks/hopper v0.4.0 // x-release-please-version
 	go.opentelemetry.io/otel v1.46.0
 	go.opentelemetry.io/otel/metric v1.46.0
 	go.opentelemetry.io/otel/sdk v1.46.0
diff --git a/hopperui/go.mod b/hopperui/go.mod
index 3b18aec..931956e 100644
--- a/hopperui/go.mod
+++ b/hopperui/go.mod
@@ -6,7 +6,7 @@ godebug fips140=only
 
 require (
 	github.com/jackc/pgx/v5 v5.11.0
-	github.com/parallelworks/hopper v0.3.1 // x-release-please-version
+	github.com/parallelworks/hopper v0.4.0 // x-release-please-version
 )
 
 require (