diff --git a/.github/workflows/coveralls.yml b/.github/workflows/coveralls.yml
index fe6b52d..7a2988c 100644
--- a/.github/workflows/coveralls.yml
+++ b/.github/workflows/coveralls.yml
@@ -39,7 +39,7 @@ jobs:
           RUSTFLAGS: "-Cinstrument-coverage"
           LLVM_PROFILE_FILE: "opensk-%p-%m.profraw"
       - name: Run grcov
-        run: RUSTUP_TOOLCHAIN=nightly grcov . --binary-path ./libraries/opensk/target/debug/ --source-dir libraries/opensk/ --output-type lcov --ignore-not-existing ---output-path ./lcov.info --ignore "/*" --ignore "examples/*" --ignore "third_party/*"
+        run: RUSTUP_TOOLCHAIN=nightly grcov . --binary-path ./libraries/opensk/target/debug/ --source-dir libraries/opensk/ --output-type lcov --ignore-not-existing --output-path ./lcov.info --ignore "/*" --ignore "examples/*" --ignore "third_party/*"
       - uses: coverallsapp/github-action@1.1.3
         name: upload report to coveralls
         with:
diff --git a/Cargo.lock b/Cargo.lock
index 599327f..0920207 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,15 +11,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "arbitrary"
-version = "0.4.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db55d72333851e17d572bec876e390cd3b11eb1ef53ae821dd9f3b653d2b4569"
-dependencies = [
- "derive_arbitrary",
-]
-
 [[package]]
 name = "arrayref"
 version = "0.3.6"
@@ -100,7 +91,6 @@ dependencies = [
 name = "ctap2"
 version = "1.0.0"
 dependencies = [
- "arbitrary",
  "arrayref",
  "byteorder",
  "crypto",
@@ -115,21 +105,9 @@ dependencies = [
  "rand 0.8.5",
  "rng256",
  "sk-cbor",
- "subtle",
  "uuid",
 ]
 
-[[package]]
-name = "derive_arbitrary"
-version = "0.4.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1a012b5e473dc912f0db0546a1c9c6a194ce8494feb66fa0237160926f9e0e6"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "ed25519-compact"
 version = "1.0.15"
diff --git a/Cargo.toml b/Cargo.toml
index 98929d9..b7766d9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,8 +21,6 @@ rng256 = { path = "libraries/rng256" }
 persistent_store = { path = "libraries/persistent_store" }
 byteorder = { version = "1", default-features = false }
 arrayref = "0.3.6"
-subtle = { version = "2.2", default-features = false, features = ["nightly"] }
-arbitrary = { version = "0.4.7", features = ["derive"], optional = true }
 rand = { version = "0.8.4", optional = true }
 ed25519-compact = { version = "1", default-features = false, optional = true }
 
diff --git a/libraries/opensk/Cargo.toml b/libraries/opensk/Cargo.toml
index 91fe9cb..6523964 100644
--- a/libraries/opensk/Cargo.toml
+++ b/libraries/opensk/Cargo.toml
@@ -38,13 +38,3 @@ enum-iterator = "0.6.0"
 sk-cbor = { path = "../cbor" }
 uuid = { version = "0.8", features = ["v4"] }
 openssl = "0.10.36"
-
-[profile.dev]
-panic = "abort"
-lto = true # Link Time Optimization usually reduces size of binaries and static libraries
-
-[profile.release]
-panic = "abort"
-lto = true # Link Time Optimization usually reduces size of binaries and static libraries
-opt-level = "z"
-codegen-units = 1