diff --git a/.github/workflows/branches-and-prs.main.kts b/.github/workflows/branches-and-prs.main.kts
index ed1b79d5e7..1497a59a4e 100755
--- a/.github/workflows/branches-and-prs.main.kts
+++ b/.github/workflows/branches-and-prs.main.kts
@@ -67,12 +67,18 @@ workflow(
         )
     }
 
+    val matrix = Matrix.full
+    with(__FILE__.parentFile.resolve("../../codecov.yml")) {
+        readText()
+            .replace("after_n_builds:.*+$".toRegex(), "after_n_builds: ${matrix.size}")
+            .let(::writeText)
+    }
     job(
         id = "build-and-verify",
         name = "Build and Verify",
         runsOn = RunnerType.Custom(expr(Matrix.operatingSystem)),
         strategy = Strategy(
-            matrix = Matrix.full
+            matrix = matrix
         )
     ) {
         uses(
diff --git a/.github/workflows/common.main.kts b/.github/workflows/common.main.kts
index 1742863719..53a7aa3122 100755
--- a/.github/workflows/common.main.kts
+++ b/.github/workflows/common.main.kts
@@ -58,6 +58,13 @@ data class Matrix(
     val exclude: (Element.() -> Boolean)? = null,
     val includes: List<Element>? = null
 ) {
+    val size by lazy {
+        originalElements
+            .filterNot(exclude ?: { true })
+            .size +
+            (includes?.size ?: 0)
+    }
+
     private val originalElements by lazy {
         (operatingSystems ?: listOf(null))
             .map { Element(operatingSystem = it) }
diff --git a/.github/workflows/release.main.kts b/.github/workflows/release.main.kts
index 0f005e6000..6102fda380 100755
--- a/.github/workflows/release.main.kts
+++ b/.github/workflows/release.main.kts
@@ -46,13 +46,19 @@ workflow(
     val SONATYPE_OSS_PASSWORD by secrets
     val SIGNING_GPG_PASSWORD by secrets
 
+    val matrix = Matrix.full
+    with(__FILE__.parentFile.resolve("../../codecov.yml")) {
+        readText()
+            .replace("after_n_builds:.*+$".toRegex(), "after_n_builds: ${matrix.size}")
+            .let(::writeText)
+    }
     val buildAndVerify = job(
         id = "build-and-verify",
         name = "Build and Verify",
         runsOn = RunnerType.Custom(expr(Matrix.operatingSystem)),
         condition = "${github.repository} == 'spockframework/spock'",
         strategy = Strategy(
-            matrix = Matrix.full
+            matrix = matrix
         )
     ) {
         uses(