diff --git a/.github/workflows/k12.yml b/.github/workflows/k12.yml
index 1d73d16cc..7e993c8a5 100644
--- a/.github/workflows/k12.yml
+++ b/.github/workflows/k12.yml
@@ -52,6 +52,7 @@ jobs:
           toolchain: ${{ matrix.rust }}
           override: true
       - run: cargo check --all-features
+      - run: cargo test --no-default-features
       - run: cargo test
       - run: cargo test --all-features
 
diff --git a/Cargo.lock b/Cargo.lock
index 946307e1b..ea7592cac 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -62,7 +62,7 @@ checksum = "7bbb73db36c1246e9034e307d0fba23f9a2e251faa47ade70c1bd252220c8311"
 [[package]]
 name = "crypto-mac"
 version = "0.8.0-pre"
-source = "git+https://github.com/rustcrypto/traits#88bdef68d6b8da01249391b74b265499dfd76a37"
+source = "git+https://github.com/rustcrypto/traits#a853a6fedf7210ed0303651afa29cb56eb64852e"
 dependencies = [
  "blobby",
  "generic-array",
@@ -72,7 +72,7 @@ dependencies = [
 [[package]]
 name = "digest"
 version = "0.9.0-pre"
-source = "git+https://github.com/rustcrypto/traits#88bdef68d6b8da01249391b74b265499dfd76a37"
+source = "git+https://github.com/rustcrypto/traits#a853a6fedf7210ed0303651afa29cb56eb64852e"
 dependencies = [
  "blobby",
  "generic-array",
diff --git a/k12/Cargo.toml b/k12/Cargo.toml
index 719126126..fe2d14c55 100644
--- a/k12/Cargo.toml
+++ b/k12/Cargo.toml
@@ -12,7 +12,7 @@ keywords = ["crypto", "hash", "digest"]
 categories = ["cryptography", "no-std"]
 
 [dependencies]
-digest = "= 0.9.0-pre"
+digest = { version = "= 0.9.0-pre", features = ["alloc"] }
 
 [dev-dependencies]
 digest = { version = "= 0.9.0-pre", features = ["dev"] }