diff --git a/.github/workflows/integration_tests.yml b/.github/workflows/integration_tests.yml
index 3c0b7a5..77f13ef 100644
--- a/.github/workflows/integration_tests.yml
+++ b/.github/workflows/integration_tests.yml
@@ -16,9 +16,11 @@ jobs:
       matrix:
         bitcoin_core_version:
           [
-            "26.0",
-            "25.1",
+            "27.0",
+            "26.1",
+            "25.2",
             "24.2",
+            "23.2",
           ]
     steps:
     - uses: actions/checkout@v3
diff --git a/README.md b/README.md
index 0f26bb8..25794f4 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ For more examples, have a look in the [examples directory](examples).
 ### Testing
 
 Tests run on every push and pull request.
-Integration tests use the latest version of the 3 most recent major Bitcoin Core versions, see [integration_tests.yml](.github/workflows/integration_tests.yml#L19-L21).
+Integration tests use the latest version of the 5 most recent major Bitcoin Core versions, see [integration_tests.yml](.github/workflows/integration_tests.yml#L19-L23).
 
 ### Useful resources