diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2537c1f..f1c1e58 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.0"
+  ".": "0.5.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2a437f..5300c56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [0.5.0](https://github.com/developmentseed/multistore/compare/v0.4.0...v0.5.0) (2026-06-04)
+
+
+### Features
+
+* **backend-federation:** outbound OIDC→backend STS exchange (oidc-provider delegates to it) ([#57](https://github.com/developmentseed/multistore/issues/57)) ([40fb24c](https://github.com/developmentseed/multistore/commit/40fb24c75c5fd0949cf2d84eecb3896b31293a2c))
+
+
+### Bug Fixes
+
+* **oidc-provider:** surface federation failures as actionable errors, not opaque 500s ([#66](https://github.com/developmentseed/multistore/issues/66)) ([0422288](https://github.com/developmentseed/multistore/commit/04222889124514e9275bfae6bb86bb91329dca9b))
+* **smoke:** default FEDERATION_TEST_KEY when repo var is empty ([#63](https://github.com/developmentseed/multistore/issues/63)) ([2c00a04](https://github.com/developmentseed/multistore/commit/2c00a041edcdb8df7cee368a294fcef32852eb3a))
+
 ## [0.4.0](https://github.com/developmentseed/multistore/compare/v0.3.1...v0.4.0) (2026-05-21)
 
 
diff --git a/Cargo.toml b/Cargo.toml
index 17f0ade..051f6a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ default-members = [
 resolver = "2"
 
 [workspace.package]
-version = "0.4.0"
+version = "0.5.0"
 edition = "2021"
 license = "MIT"
 
@@ -103,11 +103,11 @@ console_error_panic_hook = "0.1.7"
 lambda_http = "0.13"
 
 # Internal crates
-multistore = { path = "crates/core", version = "0.4.0" }
-multistore-static-config = { path = "crates/static-config", version = "0.4.0" }
-multistore-sts = { path = "crates/sts", version = "0.4.0" }
-multistore-metering = { path = "crates/metering", version = "0.4.0" }
-multistore-cf-workers = { path = "crates/cf-workers", version = "0.4.0" }
-multistore-oidc-provider = { path = "crates/oidc-provider", version = "0.4.0" }
-multistore-path-mapping = { path = "crates/path-mapping", version = "0.4.0" }
-multistore-backend-federation = { path = "crates/backend-federation", version = "0.4.0" }
+multistore = { path = "crates/core", version = "0.5.0" }
+multistore-static-config = { path = "crates/static-config", version = "0.5.0" }
+multistore-sts = { path = "crates/sts", version = "0.5.0" }
+multistore-metering = { path = "crates/metering", version = "0.5.0" }
+multistore-cf-workers = { path = "crates/cf-workers", version = "0.5.0" }
+multistore-oidc-provider = { path = "crates/oidc-provider", version = "0.5.0" }
+multistore-path-mapping = { path = "crates/path-mapping", version = "0.5.0" }
+multistore-backend-federation = { path = "crates/backend-federation", version = "0.5.0" }