diff --git a/Cargo.lock b/Cargo.lock
index 33304fe..acfaaea 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -551,6 +551,16 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
+[[package]]
+name = "erased-serde"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e004d887f51fcb9fef17317a2f3525c887d8aa3f4f50fed920816a688284a5b7"
+dependencies = [
+ "serde",
+ "typeid",
+]
+
 [[package]]
 name = "errno"
 version = "0.3.11"
@@ -1233,9 +1243,9 @@ checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5"
 
 [[package]]
 name = "radicle"
-version = "0.15.0"
+version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fbbbde9fb67cc5264a38ba0f106b55892a1aeb8c8ca9023ec36a6b7e0442700"
+checksum = "d5fe953b25a8f5c24baf1019f746912e7453746d617a1af04cb347904d241005"
 dependencies = [
  "amplify",
  "base64",
@@ -1249,13 +1259,13 @@ dependencies = [
  "log",
  "multibase",
  "nonempty 0.9.0",
- "once_cell",
  "qcheck",
  "radicle-cob",
  "radicle-crypto",
  "radicle-git-ext",
  "radicle-ssh",
  "serde",
+ "serde-untagged",
  "serde_json",
  "siphasher",
  "sqlite",
@@ -1472,6 +1482,17 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde-untagged"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "299d9c19d7d466db4ab10addd5703e4c615dec2a5a16dbbafe191045e87ee66e"
+dependencies = [
+ "erased-serde",
+ "serde",
+ "typeid",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.219"
@@ -1795,6 +1816,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
+[[package]]
+name = "typeid"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc7d623258602320d5c55d1bc22793b57daff0ec7efc270ea7d55ce1d5f5471c"
+
 [[package]]
 name = "typenum"
 version = "1.18.0"
diff --git a/Cargo.toml b/Cargo.toml
index 1749aea..37e6d48 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ indexmap = { version = "2.7.1", features = ["serde"] }
 nonempty = "0.11.0"
 once_cell = "1.20.3"
 qcheck = "1.0.0"
-radicle = { version = "0.15" }
+radicle = { version = "0.16.1" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.140"
 thiserror = "2.0.11"
@@ -25,5 +25,5 @@ url = { version = "2.5.4", features = ["serde"] }
 uuid = { version = "1.13.1", features = ["serde", "v4"] }
 
 [dev-dependencies.radicle]
-version = "0.15"
+version = "0.16.1"
 features = ["test"]