diff --git a/Cargo.lock b/Cargo.lock
index d2ce868..763aa8b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -654,7 +654,7 @@ dependencies = [
 [[package]]
 name = "comline-runtime"
 version = "0.1.0"
-source = "git+https://github.com/ComlineProject/runtime?rev=6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6#6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6"
+source = "git+https://github.com/ComlineProject/runtime?rev=4378c91b74ee1ef1debc800a3daf75c874198e70#4378c91b74ee1ef1debc800a3daf75c874198e70"
 dependencies = [
  "abi_stable",
  "bytemuck",
@@ -668,7 +668,7 @@ dependencies = [
 [[package]]
 name = "comline-runtime-conformance"
 version = "0.1.0"
-source = "git+https://github.com/ComlineProject/runtime?rev=6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6#6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6"
+source = "git+https://github.com/ComlineProject/runtime?rev=4378c91b74ee1ef1debc800a3daf75c874198e70#4378c91b74ee1ef1debc800a3daf75c874198e70"
 dependencies = [
  "comline-runtime",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index 8ba85bf..566658a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -48,7 +48,7 @@ comline-codegen-rust = { git = "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/ComlineProject/comline-rust",
 comline-codegen-typescript = { git = "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/ComlineProject/comline-typescript", rev = "932edaad1fd0a0dba47f8fff132149e03c0340dc", optional = true }
 # `comline conformance`: the conformance runner (corpus loading, judging,
 # profile proofs) and its case format, a public spec. Pinned by git rev.
-comline-runtime-conformance = { git = "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/ComlineProject/runtime", rev = "6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6" }
+comline-runtime-conformance = { git = "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/ComlineProject/runtime", rev = "4378c91b74ee1ef1debc800a3daf75c874198e70" }
 # Runs a `generator = "<path>.wasm"` target (see src/external.rs): no
 # preopened directories, no environment, no network. Exact pins, bumped
 # together.
diff --git a/tests/cli/conformance.rs b/tests/cli/conformance.rs
index 152cd58..75c28c6 100644
--- a/tests/cli/conformance.rs
+++ b/tests/cli/conformance.rs
@@ -81,6 +81,9 @@ fn the_reference_passes_every_official_encoding() {
         .assert()
         .success()
         .stderr(predicate::str::contains("packed@1 (format): "))
+        // Spec 0.2: the `comline@1` handshake profile's `handshake_check`
+        // cases load, and the reference answers them.
+        .stderr(predicate::str::contains("comline@1 (handshake): "))
         .stderr(predicate::str::contains("failed").not())
         .stderr(predicate::str::contains("unproven").not())
         .stderr(predicate::str::contains(
diff --git a/tests/fixtures/conformance/Cargo.lock b/tests/fixtures/conformance/Cargo.lock
index eb50361..97b1626 100644
--- a/tests/fixtures/conformance/Cargo.lock
+++ b/tests/fixtures/conformance/Cargo.lock
@@ -103,7 +103,7 @@ checksum = "4e7648175b45a9a48536d676f68d918270699102aa8dab5496df06904c914600"
 [[package]]
 name = "comline-reference"
 version = "0.1.0"
-source = "git+https://github.com/ComlineProject/runtime?rev=6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6#6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6"
+source = "git+https://github.com/ComlineProject/runtime?rev=4378c91b74ee1ef1debc800a3daf75c874198e70#4378c91b74ee1ef1debc800a3daf75c874198e70"
 dependencies = [
  "comline-runtime",
  "comline-runtime-conformance",
@@ -114,7 +114,7 @@ dependencies = [
 [[package]]
 name = "comline-runtime"
 version = "0.1.0"
-source = "git+https://github.com/ComlineProject/runtime?rev=6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6#6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6"
+source = "git+https://github.com/ComlineProject/runtime?rev=4378c91b74ee1ef1debc800a3daf75c874198e70#4378c91b74ee1ef1debc800a3daf75c874198e70"
 dependencies = [
  "abi_stable",
  "bytemuck",
@@ -128,7 +128,7 @@ dependencies = [
 [[package]]
 name = "comline-runtime-conformance"
 version = "0.1.0"
-source = "git+https://github.com/ComlineProject/runtime?rev=6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6#6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6"
+source = "git+https://github.com/ComlineProject/runtime?rev=4378c91b74ee1ef1debc800a3daf75c874198e70#4378c91b74ee1ef1debc800a3daf75c874198e70"
 dependencies = [
  "comline-runtime",
  "serde",
diff --git a/tests/fixtures/conformance/Cargo.toml b/tests/fixtures/conformance/Cargo.toml
index 6cb30a5..4d48beb 100644
--- a/tests/fixtures/conformance/Cargo.toml
+++ b/tests/fixtures/conformance/Cargo.toml
@@ -12,5 +12,5 @@ publish = false
 [dependencies]
 # The runtime rev the CLI pins `comline-runtime-conformance` at, so the
 # reference answers as the vectors the CLI reads were blessed.
-comline-reference = { git = "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/ComlineProject/runtime", rev = "6f8f73a247f0aa4ac8b7041b2fdc4b02bce0e0d6" }
+comline-reference = { git = "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/ComlineProject/runtime", rev = "4378c91b74ee1ef1debc800a3daf75c874198e70" }
 serde_json = "1.0"