diff --git a/test/GNUmakefile b/test/GNUmakefile
index 332b5dc4..079f251e 100644
--- a/test/GNUmakefile
+++ b/test/GNUmakefile
@@ -157,10 +157,10 @@ $(COVERAGE_REPORT) : $(SRC) $(TESTSUITE) $(BASH_DEP) .simplecov
 
 # Docker image (integration testing)
 
-ARCH_DATE=2024.02.01
+ARCH_DATE=2024.12.01
 ARCH_TAR_FN=archlinux-bootstrap-$(ARCH_DATE)-x86_64.tar.gz
 ARCH_TAR_URL=https://archive.archlinux.org/iso/$(ARCH_DATE)/$(ARCH_TAR_FN)
-ARCH_TAR_SHA256=66f23957575d2e6a427e71ee25dfe04426fb1a693cc14a3a22516136195de2d9
+ARCH_TAR_SHA256=undefined
 ARCH_TAR_DIR=$(TMP)/arch
 ARCH_TAR=$(ARCH_TAR_DIR)/$(ARCH_TAR_FN)