diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 41742e0..a648297 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -25,7 +25,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: stable
           override: true
 
       - name: Build Rust Documentation
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 0aa49fd..9cd789a 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -43,7 +43,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: stable
           override: true
 
       - name: Run cargo check
@@ -75,11 +75,11 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-cargo-build-
 
-      - name: Install nightly toolchain
+      - name: Install stable toolchain
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: stable
 
       - name: Install Nextest
         uses: taiki-e/install-action@v2
@@ -112,11 +112,11 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-cargo-build-
 
-      - name: Install nightly toolchain
+      - name: Install stable toolchain
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: stable
           override: true
           components: rustfmt, clippy
 
diff --git a/Cargo.lock b/Cargo.lock
index 082eb1e..e245e09 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -421,8 +421,8 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "plonky2"
-version = "0.2.2"
-source = "git+https://github.com/distributed-lab/plonky2?branch=stable#140282e3850a2bc5e7c0ef3c4cd35a006e68a9b3"
+version = "1.0.0"
+source = "git+https://github.com/distributed-lab/plonky2?branch=stable#fa0e0591592cfa214d92aeebe500b07ae3410c3b"
 dependencies = [
  "ahash",
  "anyhow",
@@ -454,8 +454,8 @@ dependencies = [
 
 [[package]]
 name = "plonky2_field"
-version = "0.2.2"
-source = "git+https://github.com/distributed-lab/plonky2?branch=stable#140282e3850a2bc5e7c0ef3c4cd35a006e68a9b3"
+version = "1.0.0"
+source = "git+https://github.com/distributed-lab/plonky2?branch=stable#fa0e0591592cfa214d92aeebe500b07ae3410c3b"
 dependencies = [
  "anyhow",
  "itertools",
@@ -469,16 +469,16 @@ dependencies = [
 
 [[package]]
 name = "plonky2_maybe_rayon"
-version = "0.2.0"
-source = "git+https://github.com/distributed-lab/plonky2?branch=stable#140282e3850a2bc5e7c0ef3c4cd35a006e68a9b3"
+version = "1.0.0"
+source = "git+https://github.com/distributed-lab/plonky2?branch=stable#fa0e0591592cfa214d92aeebe500b07ae3410c3b"
 dependencies = [
  "rayon",
 ]
 
 [[package]]
 name = "plonky2_util"
-version = "0.2.0"
-source = "git+https://github.com/distributed-lab/plonky2?branch=stable#140282e3850a2bc5e7c0ef3c4cd35a006e68a9b3"
+version = "1.0.0"
+source = "git+https://github.com/distributed-lab/plonky2?branch=stable#fa0e0591592cfa214d92aeebe500b07ae3410c3b"
 
 [[package]]
 name = "ppv-lite86"
diff --git a/tests/artifacts/proof.bin b/tests/artifacts/proof.bin
index 2ffa438..da3a92d 100644
Binary files a/tests/artifacts/proof.bin and b/tests/artifacts/proof.bin differ
diff --git a/tests/artifacts_generator.rs b/tests/artifacts_generator.rs
index 20fa1c3..d384c46 100644
--- a/tests/artifacts_generator.rs
+++ b/tests/artifacts_generator.rs
@@ -36,8 +36,8 @@ pub fn gen_factorial() {
 
     // Provide initial values.
     let mut pw = PartialWitness::new();
-    pw.set_target(initial_a, F::ZERO);
-    pw.set_target(initial_b, F::ONE);
+    pw.set_target(initial_a, F::ZERO).unwrap();
+    pw.set_target(initial_b, F::ONE).unwrap();
 
     let data = builder.build::<C>();