diff --git a/Cargo.lock b/Cargo.lock
index ca2a2e519c..d01cc0cc15 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -463,9 +463,9 @@ dependencies = [
 [[package]]
 name = "bhyve_api"
 version = "0.0.0"
-source = "git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12#27e2789d381c0fcc237fbe30cec2ec66bd750c12"
+source = "git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76#6d7ed9a033babc054db9eff5b59dee978d2b0d76"
 dependencies = [
- "bhyve_api_sys 0.0.0 (git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12)",
+ "bhyve_api_sys 0.0.0 (git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76)",
  "libc",
  "strum",
 ]
@@ -483,7 +483,7 @@ dependencies = [
 [[package]]
 name = "bhyve_api_sys"
 version = "0.0.0"
-source = "git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12#27e2789d381c0fcc237fbe30cec2ec66bd750c12"
+source = "git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76#6d7ed9a033babc054db9eff5b59dee978d2b0d76"
 dependencies = [
  "libc",
  "strum",
@@ -1383,7 +1383,7 @@ dependencies = [
 [[package]]
 name = "crucible-agent-client"
 version = "0.0.1"
-source = "git+https://github.com/oxidecomputer/crucible?rev=62cc2cfe64ca09c6876be7633355026fa65c8545#62cc2cfe64ca09c6876be7633355026fa65c8545"
+source = "git+https://github.com/oxidecomputer/crucible?rev=8c6d485110ecfae5409575246b986a145c386dc4#8c6d485110ecfae5409575246b986a145c386dc4"
 dependencies = [
  "anyhow",
  "chrono",
@@ -1399,7 +1399,7 @@ dependencies = [
 [[package]]
 name = "crucible-pantry-client"
 version = "0.0.1"
-source = "git+https://github.com/oxidecomputer/crucible?rev=62cc2cfe64ca09c6876be7633355026fa65c8545#62cc2cfe64ca09c6876be7633355026fa65c8545"
+source = "git+https://github.com/oxidecomputer/crucible?rev=8c6d485110ecfae5409575246b986a145c386dc4#8c6d485110ecfae5409575246b986a145c386dc4"
 dependencies = [
  "anyhow",
  "chrono",
@@ -1416,7 +1416,7 @@ dependencies = [
 [[package]]
 name = "crucible-smf"
 version = "0.0.0"
-source = "git+https://github.com/oxidecomputer/crucible?rev=62cc2cfe64ca09c6876be7633355026fa65c8545#62cc2cfe64ca09c6876be7633355026fa65c8545"
+source = "git+https://github.com/oxidecomputer/crucible?rev=8c6d485110ecfae5409575246b986a145c386dc4#8c6d485110ecfae5409575246b986a145c386dc4"
 dependencies = [
  "crucible-workspace-hack",
  "libc",
@@ -3490,7 +3490,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "async-trait",
- "bhyve_api 0.0.0 (git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12)",
+ "bhyve_api 0.0.0 (git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76)",
  "byteorder",
  "camino",
  "camino-tempfile",
@@ -5436,7 +5436,7 @@ dependencies = [
  "pq-sys",
  "pretty_assertions",
  "progenitor-client",
- "propolis-client 0.1.0 (git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12)",
+ "propolis-client 0.1.0 (git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76)",
  "rand 0.8.5",
  "rcgen",
  "ref-cast",
@@ -5682,7 +5682,7 @@ dependencies = [
  "oximeter-instruments",
  "oximeter-producer",
  "pretty_assertions",
- "propolis-client 0.1.0 (git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12)",
+ "propolis-client 0.1.0 (git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76)",
  "propolis-mock-server",
  "rand 0.8.5",
  "rcgen",
@@ -7106,7 +7106,7 @@ dependencies = [
 [[package]]
 name = "propolis-client"
 version = "0.1.0"
-source = "git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12#27e2789d381c0fcc237fbe30cec2ec66bd750c12"
+source = "git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76#6d7ed9a033babc054db9eff5b59dee978d2b0d76"
 dependencies = [
  "async-trait",
  "base64 0.21.7",
@@ -7148,7 +7148,7 @@ dependencies = [
 [[package]]
 name = "propolis-mock-server"
 version = "0.0.0"
-source = "git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12#27e2789d381c0fcc237fbe30cec2ec66bd750c12"
+source = "git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76#6d7ed9a033babc054db9eff5b59dee978d2b0d76"
 dependencies = [
  "anyhow",
  "atty",
@@ -7158,7 +7158,7 @@ dependencies = [
  "futures",
  "hyper 0.14.28",
  "progenitor",
- "propolis_types 0.0.0 (git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12)",
+ "propolis_types 0.0.0 (git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76)",
  "rand 0.8.5",
  "reqwest",
  "schemars",
@@ -7190,7 +7190,7 @@ dependencies = [
 [[package]]
 name = "propolis_types"
 version = "0.0.0"
-source = "git+https://github.com/oxidecomputer/propolis?rev=27e2789d381c0fcc237fbe30cec2ec66bd750c12#27e2789d381c0fcc237fbe30cec2ec66bd750c12"
+source = "git+https://github.com/oxidecomputer/propolis?rev=6d7ed9a033babc054db9eff5b59dee978d2b0d76#6d7ed9a033babc054db9eff5b59dee978d2b0d76"
 dependencies = [
  "schemars",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index ceac9801bb..29e2a8cbd0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -240,9 +240,9 @@ cookie = "0.18"
 criterion = { version = "0.5.1", features = [ "async_tokio" ] }
 crossbeam = "0.8"
 crossterm = { version = "0.27.0", features = ["event-stream"] }
-crucible-agent-client = { git = "https://github.com/oxidecomputer/crucible", rev = "62cc2cfe64ca09c6876be7633355026fa65c8545" }
-crucible-pantry-client = { git = "https://github.com/oxidecomputer/crucible", rev = "62cc2cfe64ca09c6876be7633355026fa65c8545" }
-crucible-smf = { git = "https://github.com/oxidecomputer/crucible", rev = "62cc2cfe64ca09c6876be7633355026fa65c8545" }
+crucible-agent-client = { git = "https://github.com/oxidecomputer/crucible", rev = "8c6d485110ecfae5409575246b986a145c386dc4" }
+crucible-pantry-client = { git = "https://github.com/oxidecomputer/crucible", rev = "8c6d485110ecfae5409575246b986a145c386dc4" }
+crucible-smf = { git = "https://github.com/oxidecomputer/crucible", rev = "8c6d485110ecfae5409575246b986a145c386dc4" }
 csv = "1.3.0"
 curve25519-dalek = "4"
 datatest-stable = "0.2.9"
@@ -381,9 +381,9 @@ prettyplease = { version = "0.2.20", features = ["verbatim"] }
 proc-macro2 = "1.0"
 progenitor = { git = "https://github.com/oxidecomputer/progenitor", branch = "main" }
 progenitor-client = { git = "https://github.com/oxidecomputer/progenitor", branch = "main" }
-bhyve_api = { git = "https://github.com/oxidecomputer/propolis", rev = "27e2789d381c0fcc237fbe30cec2ec66bd750c12" }
-propolis-client = { git = "https://github.com/oxidecomputer/propolis", rev = "27e2789d381c0fcc237fbe30cec2ec66bd750c12" }
-propolis-mock-server = { git = "https://github.com/oxidecomputer/propolis", rev = "27e2789d381c0fcc237fbe30cec2ec66bd750c12" }
+bhyve_api = { git = "https://github.com/oxidecomputer/propolis", rev = "6d7ed9a033babc054db9eff5b59dee978d2b0d76" }
+propolis-client = { git = "https://github.com/oxidecomputer/propolis", rev = "6d7ed9a033babc054db9eff5b59dee978d2b0d76" }
+propolis-mock-server = { git = "https://github.com/oxidecomputer/propolis", rev = "6d7ed9a033babc054db9eff5b59dee978d2b0d76" }
 proptest = "1.4.0"
 quote = "1.0"
 rand = "0.8.5"
diff --git a/nexus/src/app/sagas/common_storage.rs b/nexus/src/app/sagas/common_storage.rs
index 0fe14f6d2a..611fcc3258 100644
--- a/nexus/src/app/sagas/common_storage.rs
+++ b/nexus/src/app/sagas/common_storage.rs
@@ -37,10 +37,14 @@ pub(crate) async fn ensure_region_in_dataset(
 ) -> Result<crucible_agent_client::types::Region, Error> {
     let url = format!("http://{}", dataset.address());
     let client = CrucibleAgentClient::new(&url);
-
+    let Ok(extent_count) = u32::try_from(region.extent_count()) else {
+        return Err(Error::internal_error(
+            "Extent count out of range for a u32",
+        ));
+    };
     let region_request = CreateRegion {
         block_size: region.block_size().to_bytes(),
-        extent_count: region.extent_count(),
+        extent_count,
         extent_size: region.blocks_per_extent(),
         // TODO: Can we avoid casting from UUID to string?
         // NOTE: This'll require updating the crucible agent client.
diff --git a/nexus/src/app/sagas/disk_create.rs b/nexus/src/app/sagas/disk_create.rs
index 5c4f5bf1ee..5e1d386ed1 100644
--- a/nexus/src/app/sagas/disk_create.rs
+++ b/nexus/src/app/sagas/disk_create.rs
@@ -485,7 +485,7 @@ async fn sdc_regions_ensure(
         sub_volumes: vec![VolumeConstructionRequest::Region {
             block_size,
             blocks_per_extent,
-            extent_count: extent_count.try_into().unwrap(),
+            extent_count,
             gen: 1,
             opts: CrucibleOpts {
                 id: disk_id,
diff --git a/nexus/src/app/sagas/snapshot_create.rs b/nexus/src/app/sagas/snapshot_create.rs
index 53e06e310d..2a5deeff51 100644
--- a/nexus/src/app/sagas/snapshot_create.rs
+++ b/nexus/src/app/sagas/snapshot_create.rs
@@ -400,7 +400,7 @@ async fn ssc_regions_ensure(
         sub_volumes: vec![VolumeConstructionRequest::Region {
             block_size,
             blocks_per_extent,
-            extent_count: extent_count.try_into().unwrap(),
+            extent_count,
             gen: 1,
             opts: CrucibleOpts {
                 id: destination_volume_id,
diff --git a/package-manifest.toml b/package-manifest.toml
index af0d4675e2..2bfc51d533 100644
--- a/package-manifest.toml
+++ b/package-manifest.toml
@@ -490,10 +490,10 @@ only_for_targets.image = "standard"
 # 3. Use source.type = "manual" instead of "prebuilt"
 source.type = "prebuilt"
 source.repo = "crucible"
-source.commit = "62cc2cfe64ca09c6876be7633355026fa65c8545"
+source.commit = "8c6d485110ecfae5409575246b986a145c386dc4"
 # The SHA256 digest is automatically posted to:
 # https://buildomat.eng.oxide.computer/public/file/oxidecomputer/crucible/image/<commit>/crucible.sha256.txt
-source.sha256 = "5b9e3ce16c8b3558e2ce20567165268088bd1b40a518636daf658eee28dd5843"
+source.sha256 = "a974c976babbbbe4d126fe324e28093b4f69b689e1cf607ce38323befcfa494e"
 output.type = "zone"
 output.intermediate_only = true
 
@@ -502,10 +502,10 @@ service_name = "crucible_pantry_prebuilt"
 only_for_targets.image = "standard"
 source.type = "prebuilt"
 source.repo = "crucible"
-source.commit = "62cc2cfe64ca09c6876be7633355026fa65c8545"
+source.commit = "8c6d485110ecfae5409575246b986a145c386dc4"
 # The SHA256 digest is automatically posted to:
 # https://buildomat.eng.oxide.computer/public/file/oxidecomputer/crucible/image/<commit>/crucible-pantry.sha256.txt
-source.sha256 = "4aaff4a683d44f7c4d52a102a6c0592ff6135e5255f3a3317b1a38b962abd745"
+source.sha256 = "34418c60ecccade796e604997a11b1fa7f01c364996fa4b57131466e910700a8"
 output.type = "zone"
 output.intermediate_only = true
 
@@ -517,10 +517,10 @@ service_name = "propolis-server"
 only_for_targets.image = "standard"
 source.type = "prebuilt"
 source.repo = "propolis"
-source.commit = "0b71410d3a12045d34fa1c6c1d9ba1d8dd652564"
+source.commit = "6d7ed9a033babc054db9eff5b59dee978d2b0d76"
 # The SHA256 digest is automatically posted to:
 # https://buildomat.eng.oxide.computer/public/file/oxidecomputer/propolis/image/<commit>/propolis-server.sha256.txt
-source.sha256 = "b6494d26886f196c2d1f70633c8745f278e2413357cf38d1e6f473a22191c802"
+source.sha256 = "f8f41b47bc00811fefe2ba75e0f6f8ab77765776c04021e0b31f09c3b21108a9"
 output.type = "zone"
 
 [package.mg-ddm-gz]