diff --git a/Makefile b/Makefile
index 4e8e4d7837..6173bade20 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
-NITROKEY_SDK_PY_VERSION ?= v0.4.1
-NITROKEY_SDK_PY_CHECKSUM ?= 3e6410a037c95d14fce1a5021422f510b47d1b2f0a78cf88d07798b9d24974ea
+NITROKEY_SDK_PY_VERSION ?= v0.4.0
+NITROKEY_SDK_PY_CHECKSUM ?= 576ebb02bfd62e2eebaf9f96ccbc01ab6de1b00035a081a1679e05355d902bb9
 
 NITROKEY_SDK_PY_URL := https://github.com/Nitrokey/nitrokey-sdk-py/archive/refs/tags/$(NITROKEY_SDK_PY_VERSION).tar.gz
 NITROKEY_SDK_PY := nitrokey-sdk-py-$(NITROKEY_SDK_PY_VERSION)