diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f93286bd..7051a9b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -117,7 +117,7 @@ jobs:
           - os: ubuntu-24.04
             flags: '--prod'
             backend: pure-v
-          - os: macos-14
+          - os: macos-15
             flags: ''
             backend: pure-v
       fail-fast: false
diff --git a/tests/core/math_test.v b/tests/core/math_test.v
index 64114250..0fb31f4b 100644
--- a/tests/core/math_test.v
+++ b/tests/core/math_test.v
@@ -197,7 +197,9 @@ fn test_atanh() {
 	a := vtl.from_1d([-0.5, 0, 0.5])!
 	result := a.atanh()
 	expected := vtl.from_1d([-0.5493061443340548, 0.0, 0.5493061443340548])!
-	assert result.array_equal(expected)
+	assert result.shape == expected.shape
+	// Platform libm implementations can differ by a few ULPs.
+	assert result.allclose(expected, rtol: 0.0, atol: 1e-15)!
 }
 
 fn test_cbrt() {
@@ -348,7 +350,9 @@ fn test_log1p() {
 	a := vtl.from_1d([1.0, 2, 3])!
 	result := a.log1p()
 	expected := vtl.from_1d([0.6931471805599453, 1.0986122886681096, 1.3862943611198906])!
-	assert result.array_equal(expected)
+	assert result.shape == expected.shape
+	// Platform libm implementations can differ by a few ULPs.
+	assert result.allclose(expected, rtol: 0.0, atol: 1e-15)!
 }
 
 fn test_log2() {