--- a/debian/patches/0006-Reproducible-build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/0006-Reproducible-build.patch	2021-08-23 17:25:16.439560711 +0100
@@ -0,0 +1,22 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2021-08-23
+
+--- numcodecs-0.8.1+ds.orig/numcodecs/zfpy.py
++++ numcodecs-0.8.1+ds/numcodecs/zfpy.py
+@@ -32,12 +32,14 @@ if _zfpy:
+ 
+         def __init__(
+             self,
+-            mode=_zfpy.mode_fixed_accuracy,
++            mode=None,
+             tolerance=-1,
+             rate=-1,
+             precision=-1,
+             compression_kwargs=None,
+         ):
++            if mode is None:
++                mode = _zfpy.mode_fixed_accuracy
+             self.mode = mode
+             if mode == _zfpy.mode_fixed_accuracy:
+                 self.compression_kwargs = {"tolerance": tolerance}
--- a/debian/patches/series	2021-08-23 17:17:43.045547377 +0100
--- b/debian/patches/series	2021-08-23 17:25:13.915567506 +0100
@@ -3,3 +3,4 @@
 0003-Clean-fixtures.patch
 0004-Cpuinfo.patch
 0005-Skip-broken-tests-on-BE-archs.patch
+0006-Reproducible-build.patch