diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index fd719e85..ae4e7a7c 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -432,7 +432,7 @@ dependencies = [
 
 [[package]]
 name = "docket-conformance-agent"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "chrono",
  "clap",
@@ -451,7 +451,7 @@ dependencies = [
 
 [[package]]
 name = "docket-rs"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "bytes",
  "chrono",
@@ -484,7 +484,7 @@ dependencies = [
 
 [[package]]
 name = "docket-rs-macros"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index ddc1e885..4f62e773 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -5,7 +5,7 @@ members = ["docket", "docket-macros", "conformance-agent"]
 resolver = "3"
 
 [workspace.package]
-version = "0.3.0"
+version = "0.4.0"
 edition = "2024"
 rust-version = "1.99"
 license = "MIT"
@@ -17,7 +17,7 @@ chrono-tz = "0.10.4"
 clap = "4.6.7"
 croner = "4.0.1"
 docket-rs = { path = "docket" }
-docket-rs-macros = { version = "=0.3.0", path = "docket-macros" }
+docket-rs-macros = { version = "=0.4.0", path = "docket-macros" }
 futures = "0.3.34"
 futures-util = "0.3.34"
 gethostname = "1.1.0"
diff --git a/rust/docket/README.md b/rust/docket/README.md
index 7ab127ea..ad5ec235 100644
--- a/rust/docket/README.md
+++ b/rust/docket/README.md
@@ -10,7 +10,7 @@ tasks, and runs a worker.
 
 ```toml
 [dependencies]
-docket-rs = "0.3"
+docket-rs = "0.4"
 serde = { version = "1", features = ["derive"] }
 tokio = { version = "1", features = ["full"] }
 ```
@@ -89,7 +89,7 @@ features brings `aws-lc-rs`.  If your build has no backend, turn on
 
 ```toml
 [dependencies]
-docket-rs = { version = "0.3", features = ["tls-ring"] }
+docket-rs = { version = "0.4", features = ["tls-ring"] }
 ```
 
 With no backend, the first `rediss://` connect panics.  With two backends,
@@ -99,7 +99,7 @@ Without TLS, turn off the default features:
 
 ```toml
 [dependencies]
-docket-rs = { version = "0.3", default-features = false }
+docket-rs = { version = "0.4", default-features = false }
 ```
 
 Every connection docket-rs opens to Redis gives up on a connect after 10
@@ -149,7 +149,7 @@ last one left there:
 
 ```toml
 [dev-dependencies]
-docket-rs = { version = "0.3", features = ["memory"] }
+docket-rs = { version = "0.4", features = ["memory"] }
 ```
 
 An application that keeps keys of its own in the docket's Redis reaches them