diff --git a/.github/workflows/ci-casper-rust-contract.yml b/.github/workflows/ci-casper-rust-contract.yml
index cdb4867..d1e821e 100644
--- a/.github/workflows/ci-casper-rust-contract.yml
+++ b/.github/workflows/ci-casper-rust-contract.yml
@@ -18,13 +18,13 @@ jobs:
         os: [ubuntu-20.04, ubuntu-22.04]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
           components: rustfmt, clippy
-          toolchain: nightly-2023-03-25
       # Needed for gcc install
+      - run: sudo apt update && sudo apt install -y build-essential
       - run: make prepare
       - run: make check-lint
       - run: make test
diff --git a/.github/workflows/nightly-scheduled-test.yml b/.github/workflows/nightly-scheduled-test.yml
index c6a0b0a..bdadfe1 100644
--- a/.github/workflows/nightly-scheduled-test.yml
+++ b/.github/workflows/nightly-scheduled-test.yml
@@ -14,12 +14,11 @@ jobs:
         os: [ubuntu-20.04, ubuntu-22.04]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
           components: rustfmt, clippy
-          toolchain: nightly
       # Needed for gcc install
       - run: sudo apt update && sudo apt install -y build-essential
       - run: make prepare
diff --git a/contract-v1/Cargo.toml b/contract-v1/Cargo.toml
index bc9f67e..e190734 100644
--- a/contract-v1/Cargo.toml
+++ b/contract-v1/Cargo.toml
@@ -5,8 +5,8 @@ authors = ["CasperLabs <https://discord.com/invite/Q38s3Vh>"]
 edition = "2021"
 
 [dependencies]
-casper-contract = "4.0.0"
-casper-types = "4.0.1"
+casper-contract = "3.0.0"
+casper-types = "3.0.0"
 
 [[bin]]
 name = "counter-v1"
diff --git a/contract-v2/Cargo.toml b/contract-v2/Cargo.toml
index 5fba803..047e0c1 100644
--- a/contract-v2/Cargo.toml
+++ b/contract-v2/Cargo.toml
@@ -4,8 +4,8 @@ version = "1.0.0"
 edition = "2021"
 
 [dependencies]
-casper-contract = "4.0.0"
-casper-types = "4.0.1"
+casper-contract = "3.0.0"
+casper-types = "3.0.0"
 
 [[bin]]
 name = "counter-v2"
diff --git a/counter-call/Cargo.toml b/counter-call/Cargo.toml
index 281295a..917a996 100644
--- a/counter-call/Cargo.toml
+++ b/counter-call/Cargo.toml
@@ -5,8 +5,8 @@ authors = ["CasperLabs <https://discord.com/invite/Q38s3Vh>"]
 edition = "2021"
 
 [dependencies]
-casper-contract = "4.0.0"
-casper-types = "4.0.1"
+casper-contract = "3.0.0"
+casper-types = "3.0.0"
 
 [[bin]]
 name = "counter-call"
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index 217d05a..c023817 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -5,9 +5,9 @@ authors = ["CasperLabs <https://discord.com/invite/Q38s3Vh>"]
 edition = "2021"
 
 [dependencies]
-casper-engine-test-support = { version = "7.0.1", features = ["test-support"] }
-casper-execution-engine = "7.0.1"
-casper-types = "4.0.1"
+casper-engine-test-support = { version = "5.0.0", features = ["test-support"] }
+casper-execution-engine = "5.0.0"
+casper-types = "3.0.0"
 
 [[bin]]
 name = "integration-tests"