diff --git a/CHANGELOG b/CHANGELOG
index f502adb..1d28380 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+0.5.3
+ - setup: bump numpy to 1.25.1
+ - tests: workaround for broken numpy repr
 0.5.2
  - docs: cleanup readme
 0.5.1
diff --git a/pyproject.toml b/pyproject.toml
index b902b24..d2b7bb1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ classifiers = [
 ]
 license = {text = "GNU Lesser General Public License v3 or later (LGPLv3+)"}
 dependencies = [
-    "numpy",
+    "numpy>=1.25.1",
 ]
 dynamic = ["version"]
 
diff --git a/tests/helper.py b/tests/helper.py
index f0101c4..3217696 100644
--- a/tests/helper.py
+++ b/tests/helper.py
@@ -3,14 +3,18 @@
 
 from igor2.binarywave import load as loadibw
 
-
 data_dir = pathlib.Path(__file__).parent / "data"
 
 
 def assert_equal_dump_no_whitespace_no_byte(data_a, data_b):
-    a = data_a.replace(" ", "").replace("b'", "'").replace("\n", "")
-    b = data_b.replace(" ", "").replace("b'", "'").replace("\n", "")
-    assert a == b
+    def repl(x):
+        return x.replace(
+            " ", "").replace(
+            "b'", "'").replace(
+            "\n", "").replace(
+            "float32", "'>f4'")
+
+    assert repl(data_a) == repl(data_b)
 
 
 def dumpibw(filename):
@@ -26,4 +30,4 @@ def format_data(data):
 
 def walk_callback(dirpath, key, value):
     return 'walk callback on ({}, {}, {})'.format(
-            dirpath, key, '{...}' if isinstance(value, dict) else value)
+        dirpath, key, '{...}' if isinstance(value, dict) else value)
diff --git a/tests/test_ibw.py b/tests/test_ibw.py
index 9eb6ec2..9fb0410 100644
--- a/tests/test_ibw.py
+++ b/tests/test_ibw.py
@@ -11,7 +11,7 @@ def test_ibw01():
                                      'wfmSize': 166},
                       'note': '',
                       'padding': array([], dtype=float64),
-                      'wData': array([ 5.,  4.,  3.,  2.,  1.]),
+                      'wData': array([ 5.,  4.,  3.,  2.,  1.], dtype=float32),
                       'wave_header': {'aModified': 0,
                                       'bname': 'double',
                                       'botFullScale': 0.0,