diff --git a/.github/coq-concert.opam.locked b/.github/coq-concert.opam.locked
index 536cf818..262a855d 100644
--- a/.github/coq-concert.opam.locked
+++ b/.github/coq-concert.opam.locked
@@ -21,7 +21,7 @@ depends: [
   "coq-metacoq-utils" {= "1.3.3+8.19"}
   "coq-rust-extraction" {= "0.1.0"}
   "coq-elm-extraction" {= "0.1.0"}
-  "coq-quickchick" {= "2.0.4"}
+  "coq-quickchick" {= "2.1.0"}
   "coq-stdpp" {= "1.10.0"}
 ]
 build: [
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7c973de2..bc60e806 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,32 +33,34 @@ env:
   JOBS: 4
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     permissions:
       contents: write
     steps:
       - name: Checkout branch ${{ github.ref_name }}
         uses: actions/checkout@v4
 
+      - name: Set up OCaml
+        uses: ocaml/setup-ocaml@v3
+        with:
+          ocaml-compiler: ${{env.OCAML_COMILER_VERSION}}
+          opam-repositories: |
+            coq-released: https://coq.inria.fr/opam/released
+            default: https://opam.ocaml.org
+          opam-pin: false
+
       - run: sudo apt-get update
       - name: Restore opam cache
         id: opam-cache
         uses: actions/cache@v4
         with:
-          path: "~/.opam"
+          path: ${{github.workspace}}/_opam
           key: opam-${{env.OCAML_COMILER_VERSION}}-${{hashFiles('.github/coq-concert.opam.locked')}}
           restore-keys: |
             opam-${{env.OCAML_COMILER_VERSION}}-
 
-      - name: Set up OCaml
-        uses: avsm/setup-ocaml@v1
-        with:
-          ocaml-version: ${{env.OCAML_COMILER_VERSION}}
-
       - name: Build dependencies
-        #if: ${{ !steps.opam-cache.outputs.cache-hit }}
         run: |
-          opam repo add coq-released https://coq.inria.fr/opam/released
           opam install --deps-only -j${{ env.JOBS }} .github/coq-concert.opam.locked
           opam install -y -j${{ env.JOBS }} coq-dpdgraph
           opam clean -a -c -s --logs
@@ -144,10 +146,10 @@ jobs:
           path: extraction/tests/extracted-code
 
       - name: Set up Rust
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: 1.69.0
-          target: wasm32-unknown-unknown
+          targets: wasm32-unknown-unknown
       - name: Set up Concordium tools
         run: |
           curl -L -O https://distribution.concordium.software/tools/linux/cargo-concordium_1.0.0
diff --git a/.github/workflows/lint-opam.yml b/.github/workflows/lint-opam.yml
index 4af9ebe8..e94626c0 100644
--- a/.github/workflows/lint-opam.yml
+++ b/.github/workflows/lint-opam.yml
@@ -9,6 +9,9 @@ concurrency:
   cancel-in-progress: true
 permissions:
   contents: read
+env:
+  OCAML_COMILER_VERSION: "4.14.2"
+  JOBS: 4
 jobs:
   lint:
     runs-on: ubuntu-latest
@@ -18,7 +21,7 @@ jobs:
       - name: Set up opam
         uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-compiler: 4.14.x
+          ocaml-compiler: ${{env.OCAML_COMILER_VERSION}}
           opam-repositories: |
             coq-released: https://coq.inria.fr/opam/released
             default: https://opam.ocaml.org
diff --git a/.github/workflows/refresh-cache.yml b/.github/workflows/refresh-cache.yml
index ef5eaa73..74b53752 100644
--- a/.github/workflows/refresh-cache.yml
+++ b/.github/workflows/refresh-cache.yml
@@ -10,9 +10,10 @@ permissions:
   contents: read
 env:
   OCAML_COMILER_VERSION: "4.14.2"
+  JOBS: 4
 jobs:
   cache:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout branch ${{ github.ref_name }}
         uses: actions/checkout@v4
@@ -22,14 +23,18 @@ jobs:
         id: opam-cache
         uses: actions/cache@v4
         with:
-          path: "~/.opam"
+          path: ${{github.workspace}}/_opam
           fail-on-cache-miss: true
           key: opam-${{env.OCAML_COMILER_VERSION}}-${{hashFiles('.github/coq-concert.opam.locked')}}
           restore-keys: |
             opam-${{env.OCAML_COMILER_VERSION}}-
 
       - name: Set up OCaml
-        uses: avsm/setup-ocaml@v1
+        uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-version: ${{env.OCAML_COMILER_VERSION}}
+          ocaml-compiler: ${{env.OCAML_COMILER_VERSION}}
+          opam-repositories: |
+            coq-released: https://coq.inria.fr/opam/released
+            default: https://opam.ocaml.org
+          opam-pin: false
       - run: opam list
diff --git a/coq-concert.opam b/coq-concert.opam
index e4638f44..17dfa3e1 100644
--- a/coq-concert.opam
+++ b/coq-concert.opam
@@ -3,7 +3,7 @@ name: "coq-concert"
 version: "dev"
 synopsis: "A framework for smart contract verification in Coq"
 description: """
-A framework for smart contract verification in Coq
+A framework for smart contract verification in  Coq
 """
 maintainer: "Danil Annenkov <danil.v.annenkov@gmail.com>"
 authors: "The COBRA team"
diff --git a/test b/test
new file mode 100644
index 00000000..e69de29b