diff --git a/tests/template_tests/syntax_tests/test_numpy.py b/tests/template_tests/syntax_tests/test_numpy.py
index fe60939586..8425d8ecc0 100644
--- a/tests/template_tests/syntax_tests/test_numpy.py
+++ b/tests/template_tests/syntax_tests/test_numpy.py
@@ -1,4 +1,5 @@
 from unittest import skipIf
+import warnings
 
 from django.conf import settings
 from django.test import SimpleTestCase
@@ -13,6 +14,13 @@ except ImportError:
 
 @skipIf(numpy is False, "Numpy must be installed to run these tests.")
 class NumpyTests(SimpleTestCase):
+    # Ignore numpy deprecation warnings (#23890)
+    warnings.filterwarnings(
+        "ignore",
+        "Using a non-integer number instead of an "
+        "integer will result in an error in the future",
+        DeprecationWarning
+    )
 
     @setup({'numpy-array-index01': '{{ var.1 }}'})
     def test_numpy_array_index01(self):