diff --git a/Cargo.lock b/Cargo.lock
index 42bfdfcca..75efbf6c8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1861,7 +1861,7 @@ checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
 
 [[package]]
 name = "janus_aggregator"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "assert_matches",
@@ -1945,7 +1945,7 @@ dependencies = [
 
 [[package]]
 name = "janus_aggregator_api"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1975,7 +1975,7 @@ dependencies = [
 
 [[package]]
 name = "janus_aggregator_core"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "assert_matches",
@@ -2030,14 +2030,14 @@ dependencies = [
 
 [[package]]
 name = "janus_build_script_utils"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "zstd",
 ]
 
 [[package]]
 name = "janus_client"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "assert_matches",
  "backoff",
@@ -2060,7 +2060,7 @@ dependencies = [
 
 [[package]]
 name = "janus_collector"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "assert_matches",
  "backoff",
@@ -2085,7 +2085,7 @@ dependencies = [
 
 [[package]]
 name = "janus_core"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "assert_matches",
@@ -2129,7 +2129,7 @@ dependencies = [
 
 [[package]]
 name = "janus_integration_tests"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "backoff",
@@ -2160,7 +2160,7 @@ dependencies = [
 
 [[package]]
 name = "janus_interop_binaries"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "backoff",
@@ -2204,7 +2204,7 @@ dependencies = [
 
 [[package]]
 name = "janus_messages"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "assert_matches",
@@ -2222,7 +2222,7 @@ dependencies = [
 
 [[package]]
 name = "janus_tools"
-version = "0.5.27"
+version = "0.5.28"
 dependencies = [
  "anyhow",
  "assert_matches",
diff --git a/Cargo.toml b/Cargo.toml
index fdd87498d..7b93fe431 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ homepage = "https://divviup.org"
 license = "MPL-2.0"
 repository = "https://github.com/divviup/janus"
 rust-version = "1.71.0"
-version = "0.5.27"
+version = "0.5.28"
 
 [workspace.dependencies]
 anyhow = "1"
diff --git a/core/src/test_util/testcontainers.rs b/core/src/test_util/testcontainers.rs
index 63a8ae670..ad3898a22 100644
--- a/core/src/test_util/testcontainers.rs
+++ b/core/src/test_util/testcontainers.rs
@@ -29,8 +29,8 @@ pub struct Postgres {
 }
 
 impl Postgres {
-    const NAME: &str = "postgres";
-    const TAG: &str = "14-alpine";
+    const NAME: &'static str = "postgres";
+    const TAG: &'static str = "14-alpine";
 }
 
 impl Default for Postgres {