diff --git a/.github/workflows/backend-tests.yml b/.github/workflows/backend-tests.yml
index 28d8c60..f053412 100644
--- a/.github/workflows/backend-tests.yml
+++ b/.github/workflows/backend-tests.yml
@@ -7,6 +7,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   unit:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/ci-abi-metadata.yml b/.github/workflows/ci-abi-metadata.yml
index ea6e786..e3304c5 100644
--- a/.github/workflows/ci-abi-metadata.yml
+++ b/.github/workflows/ci-abi-metadata.yml
@@ -9,6 +9,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   generate-abi-metadata:
     name: generate-and-verify-abi-metadata
diff --git a/.github/workflows/ci-abi-snapshots.yml b/.github/workflows/ci-abi-snapshots.yml
index eabd289..bd60ba8 100644
--- a/.github/workflows/ci-abi-snapshots.yml
+++ b/.github/workflows/ci-abi-snapshots.yml
@@ -4,6 +4,10 @@ on:
   pull_request:
     branches: [main]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check-abi:
     name: check-abi-snapshots
diff --git a/.github/workflows/ci-contracts.yml b/.github/workflows/ci-contracts.yml
index 97f4049..a2f4eb2 100644
--- a/.github/workflows/ci-contracts.yml
+++ b/.github/workflows/ci-contracts.yml
@@ -4,6 +4,10 @@ on:
   pull_request:
     branches: [main]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: cargo test
diff --git a/.github/workflows/ci-coverage.yml b/.github/workflows/ci-coverage.yml
index 545ca2f..d1699c5 100644
--- a/.github/workflows/ci-coverage.yml
+++ b/.github/workflows/ci-coverage.yml
@@ -8,6 +8,10 @@ permissions:
   contents: read
   pull-requests: write
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   COVERAGE_THRESHOLD: 70
 
diff --git a/.github/workflows/ci-error-docs.yml b/.github/workflows/ci-error-docs.yml
index c926709..a18a534 100644
--- a/.github/workflows/ci-error-docs.yml
+++ b/.github/workflows/ci-error-docs.yml
@@ -13,6 +13,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check-error-docs-sync:
     name: check-error-codes-docs-sync
diff --git a/.github/workflows/ci-post-deploy-verify.yml b/.github/workflows/ci-post-deploy-verify.yml
index 99c423c..4ea2701 100644
--- a/.github/workflows/ci-post-deploy-verify.yml
+++ b/.github/workflows/ci-post-deploy-verify.yml
@@ -17,6 +17,10 @@ on:
         description: "Deployed compliance contract ID (C…)"
         required: true
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   deploy-testnet:
     name: deploy (testnet)
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1208463..3dbcc60 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,6 +4,10 @@ on:
   pull_request:
     branches: [main]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-and-lint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/lint-docs.yml b/.github/workflows/lint-docs.yml
index 123a7a7..08c64e6 100644
--- a/.github/workflows/lint-docs.yml
+++ b/.github/workflows/lint-docs.yml
@@ -8,6 +8,10 @@ permissions:
   contents: read
   pull-requests: write
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint-docs:
     runs-on: ubuntu-latest