diff --git a/requirements.txt b/requirements.txt
index ce5b6ebd9..671941882 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,6 +23,9 @@ tabulate==0.9.0
 pycoingecko==3.2.0
 jinja2==3.1.4
 tables==3.10.1
+# Pin blosc2 to < 3.0 until piwheel has wheels for 3.x
+blosc2==2.7.1; platform_machine == 'armv7l'
+blosc2==3.0.0; platform_machine != 'armv7l'
 joblib==1.4.2
 rich==13.9.4
 pyarrow==18.1.0; platform_machine != 'armv7l'