diff --git a/Cargo.lock b/Cargo.lock
index 937f69721d2..e3e0cc258ff 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5363,6 +5363,7 @@ dependencies = [
  "dropshot",
  "dropshot-api-manager-types",
  "hyper",
+ "installinator-common-versions",
  "omicron-common",
  "omicron-uuid-kinds",
  "omicron-workspace-hack",
@@ -5398,6 +5399,7 @@ dependencies = [
  "anyhow",
  "camino",
  "illumos-utils",
+ "installinator-common-versions",
  "libc",
  "omicron-common",
  "omicron-workspace-hack",
@@ -5412,6 +5414,16 @@ dependencies = [
  "update-engine",
 ]
 
+[[package]]
+name = "installinator-common-versions"
+version = "0.1.0"
+dependencies = [
+ "omicron-uuid-kinds",
+ "omicron-workspace-hack",
+ "schemars 0.8.22",
+ "serde",
+]
+
 [[package]]
 name = "instant"
 version = "0.1.13"
diff --git a/Cargo.toml b/Cargo.toml
index beb7cdbfd91..0ec51951118 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -64,6 +64,7 @@ members = [
     "illumos-utils",
     "installinator-api",
     "installinator-common",
+    "installinator-common/versions",
     "installinator",
     "internal-dns/cli",
     "internal-dns/resolver",
@@ -227,6 +228,7 @@ default-members = [
     "illumos-utils",
     "installinator-api",
     "installinator-common",
+    "installinator-common/versions",
     "installinator",
     "internal-dns/cli",
     "internal-dns/resolver",
@@ -516,6 +518,7 @@ installinator = { path = "installinator" }
 installinator-api = { path = "installinator-api" }
 installinator-client = { path = "clients/installinator-client" }
 installinator-common = { path = "installinator-common" }
+installinator-common-versions = { path = "installinator-common/versions" }
 internal-dns-resolver = { path = "internal-dns/resolver" }
 internal-dns-types = { path = "internal-dns/types" }
 ipcc = { path = "ipcc" }
diff --git a/installinator-api/Cargo.toml b/installinator-api/Cargo.toml
index c5150274617..eefd3034531 100644
--- a/installinator-api/Cargo.toml
+++ b/installinator-api/Cargo.toml
@@ -12,6 +12,7 @@ anyhow.workspace = true
 dropshot.workspace = true
 dropshot-api-manager-types.workspace = true
 hyper.workspace = true
+installinator-common-versions.workspace = true
 omicron-common.workspace = true
 omicron-uuid-kinds.workspace = true
 omicron-workspace-hack.workspace = true
diff --git a/installinator-api/src/lib.rs b/installinator-api/src/lib.rs
index c42379ece4e..3576643e272 100644
--- a/installinator-api/src/lib.rs
+++ b/installinator-api/src/lib.rs
@@ -16,9 +16,8 @@ use dropshot::{
 };
 use dropshot_api_manager_types::api_versions;
 use hyper::header;
+use installinator_common_versions::latest;
 use omicron_uuid_kinds::MupdateUuid;
-use schemars::JsonSchema;
-use serde::Deserialize;
 use tufaceous_artifact::ArtifactHashId;
 use update_engine::{NestedSpec, events::EventReport};
 
@@ -30,12 +29,6 @@ api_versions!([
 
 const PROGRESS_REPORT_MAX_BYTES: usize = 4 * 1024 * 1024;
 
-#[derive(Debug, Deserialize, JsonSchema)]
-pub struct ReportQuery {
-    /// A unique identifier for the update.
-    pub update_id: MupdateUuid,
-}
-
 #[dropshot::api_description]
 pub trait InstallinatorApi {
     type Context;
@@ -63,7 +56,7 @@ pub trait InstallinatorApi {
     }]
     async fn report_progress(
         rqctx: RequestContext<Self::Context>,
-        path: Path<ReportQuery>,
+        path: Path<latest::report::ReportQuery>,
         report: TypedBody<EventReport<NestedSpec>>,
     ) -> Result<HttpResponseUpdatedNoContent, HttpError>;
 }
diff --git a/installinator-common/Cargo.toml b/installinator-common/Cargo.toml
index 51dde7aeecb..b1cbacfe252 100644
--- a/installinator-common/Cargo.toml
+++ b/installinator-common/Cargo.toml
@@ -11,6 +11,7 @@ workspace = true
 anyhow.workspace = true
 camino.workspace = true
 illumos-utils.workspace = true
+installinator-common-versions.workspace = true
 omicron-common.workspace = true
 libc.workspace = true
 schemars.workspace = true
diff --git a/installinator-common/src/lib.rs b/installinator-common/src/lib.rs
index 4771de7b271..aeac5201886 100644
--- a/installinator-common/src/lib.rs
+++ b/installinator-common/src/lib.rs
@@ -7,6 +7,7 @@
 mod block_size_writer;
 mod progress;
 mod raw_disk_writer;
+pub mod report;
 
 pub use block_size_writer::*;
 pub use progress::*;
diff --git a/installinator-common/src/report.rs b/installinator-common/src/report.rs
new file mode 100644
index 00000000000..15cc3518944
--- /dev/null
+++ b/installinator-common/src/report.rs
@@ -0,0 +1,5 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+pub use installinator_common_versions::latest::report::*;
diff --git a/installinator-common/versions/Cargo.toml b/installinator-common/versions/Cargo.toml
new file mode 100644
index 00000000000..3d38bcb2be8
--- /dev/null
+++ b/installinator-common/versions/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "installinator-common-versions"
+version = "0.1.0"
+edition.workspace = true
+license = "MPL-2.0"
+
+[lints]
+workspace = true
+
+[dependencies]
+omicron-uuid-kinds.workspace = true
+omicron-workspace-hack.workspace = true
+schemars.workspace = true
+serde.workspace = true
diff --git a/installinator-common/versions/src/initial/mod.rs b/installinator-common/versions/src/initial/mod.rs
new file mode 100644
index 00000000000..ca7e3190329
--- /dev/null
+++ b/installinator-common/versions/src/initial/mod.rs
@@ -0,0 +1,7 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+//! Version `INITIAL` of the Installinator API.
+
+pub mod report;
diff --git a/installinator-common/versions/src/initial/report.rs b/installinator-common/versions/src/initial/report.rs
new file mode 100644
index 00000000000..82d9d662694
--- /dev/null
+++ b/installinator-common/versions/src/initial/report.rs
@@ -0,0 +1,15 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+//! Report-related types for the Installinator API.
+
+use omicron_uuid_kinds::MupdateUuid;
+use schemars::JsonSchema;
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize, JsonSchema)]
+pub struct ReportQuery {
+    /// A unique identifier for the update.
+    pub update_id: MupdateUuid,
+}
diff --git a/installinator-common/versions/src/latest.rs b/installinator-common/versions/src/latest.rs
new file mode 100644
index 00000000000..b5a64fa1be2
--- /dev/null
+++ b/installinator-common/versions/src/latest.rs
@@ -0,0 +1,9 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+//! Re-exports of the latest versions of all published types.
+
+pub mod report {
+    pub use crate::v1::report::ReportQuery;
+}
diff --git a/installinator-common/versions/src/lib.rs b/installinator-common/versions/src/lib.rs
new file mode 100644
index 00000000000..2072fa3c6ec
--- /dev/null
+++ b/installinator-common/versions/src/lib.rs
@@ -0,0 +1,34 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+//! Versioned types for the Installinator API.
+//!
+//! # Adding a new API version
+//!
+//! When adding a new API version N with added or changed types:
+//!
+//! 1. Create `<version_name>/mod.rs`, where `<version_name>` is the lowercase
+//!    form of the new version's identifier, as defined in the API trait's
+//!    `api_versions!` macro.
+//!
+//! 2. Add to the end of this list:
+//!
+//!    ```rust,ignore
+//!    #[path = "<version_name>/mod.rs"]
+//!    pub mod vN;
+//!    ```
+//!
+//! 3. Add your types to the new module, mirroring the module structure from
+//!    earlier versions.
+//!
+//! 4. Update `latest.rs` with new and updated types from the new version.
+//!
+//! For more information, see the [detailed guide] and [RFD 619].
+//!
+//! [detailed guide]: https://github.com/oxidecomputer/dropshot-api-manager/blob/main/guides/new-version.md
+//! [RFD 619]: https://rfd.shared.oxide.computer/rfd/619
+
+pub mod latest;
+#[path = "initial/mod.rs"]
+pub mod v1;
diff --git a/wicketd/src/artifacts/server.rs b/wicketd/src/artifacts/server.rs
index 1bb4f28ef99..84c2aa6543d 100644
--- a/wicketd/src/artifacts/server.rs
+++ b/wicketd/src/artifacts/server.rs
@@ -14,8 +14,8 @@ use dropshot::RequestContext;
 use dropshot::TypedBody;
 use futures::TryStreamExt;
 use installinator_api::InstallinatorApi;
-use installinator_api::ReportQuery;
 use installinator_api::body_to_artifact_response;
+use installinator_common::report::ReportQuery;
 use slog::Logger;
 use slog::error;
 use tufaceous_artifact::ArtifactHashId;