diff --git a/integration_tests/recipes/README.md b/integration_tests/recipes/README.md
index e23f0870..395adf04 100644
--- a/integration_tests/recipes/README.md
+++ b/integration_tests/recipes/README.md
@@ -3,6 +3,7 @@ This directory contains a few curated recipes to test the build process of pyodi
 ### List of recipes and their purpose
 
 - numpy: The most popular and widely used library in the scientific computing community.
+- pywavelets: a library with C and Cython extensions that uses the NumPy-C API.
 - orjson: Tests rust extension modules.
 - zlib: Tests static libraries.
 - geos: Tests shared libraries.
diff --git a/integration_tests/recipes/pywavelets/meta.yaml b/integration_tests/recipes/pywavelets/meta.yaml
new file mode 100644
index 00000000..70b69ba9
--- /dev/null
+++ b/integration_tests/recipes/pywavelets/meta.yaml
@@ -0,0 +1,18 @@
+package:
+  name: pywavelets
+  version: 1.8.0
+  top-level:
+    - pywt
+source:
+  sha256: f3800245754840adc143cbc29534a1b8fc4b8cff6e9d403326bd52b7bb5c35aa
+  url: https://files.pythonhosted.org/packages/48/45/bfaaab38545a33a9f06c61211fc3bea2e23e8a8e00fedeb8e57feda722ff/pywavelets-1.8.0.tar.gz
+requirements:
+  host:
+    - numpy
+  run:
+    - numpy
+about:
+  home: https://github.com/PyWavelets/pywt
+  PyPI: https://pypi.org/project/pywavelets
+  summary: PyWavelets, wavelet transform module
+  license: MIT
diff --git a/pyodide_build/pypabuild.py b/pyodide_build/pypabuild.py
index 3a639722..17105057 100644
--- a/pyodide_build/pypabuild.py
+++ b/pyodide_build/pypabuild.py
@@ -34,6 +34,7 @@
 AVOIDED_REQUIREMENTS = [
     # mesonpy installs patchelf in linux platform but we don't want it.
     "patchelf",
+    "oldest-supported-numpy",
 ]
 
 # corresponding env variables for symlinks
@@ -122,7 +123,7 @@ def remove_avoided_requirements(
     for reqstr in list(requires):
         req = Requirement(reqstr)
         for avoid_name in set(avoided_requirements):
-            if avoid_name in req.name.lower():
+            if avoid_name == req.name.lower():
                 requires.remove(reqstr)
     return requires