diff --git a/steps/tcc_bootstrap_alt-0.1/pass1.kaem b/steps/tcc_bootstrap_alt-0.1/pass1.kaem
index d4413b63..1732dc73 100644
--- a/steps/tcc_bootstrap_alt-0.1/pass1.kaem
+++ b/steps/tcc_bootstrap_alt-0.1/pass1.kaem
@@ -27,3 +27,13 @@ chmod 755 ./x86/artifact/kaem-optional-seed
 kaem --file kaem.x86
 cp artifacts/tcc_27_boot_static.exe /usr/bin/tcc-boot0
 chmod 755 /usr/bin/tcc-boot0
+
+# Checksums
+if match x${UPDATE_CHECKSUMS} xTrue; then
+    sha256sum -o ${pkg}.${ARCH}.checksums \
+        /usr/bin/tcc-boot0
+
+    cp ${pkg}.checksums ${SRCDIR}
+else
+    sha256sum -c ${pkg}.${ARCH}.checksums
+fi
diff --git a/steps/tcc_bootstrap_alt-0.1/tcc_bootstrap_alt-0.1.x86.checksums b/steps/tcc_bootstrap_alt-0.1/tcc_bootstrap_alt-0.1.x86.checksums
new file mode 100644
index 00000000..d08ca471
--- /dev/null
+++ b/steps/tcc_bootstrap_alt-0.1/tcc_bootstrap_alt-0.1.x86.checksums
@@ -0,0 +1 @@
+26268bc6b96b48e6d25e08abce0ce1ecaebb58c99f898f35a485ec696117f1ca  /usr/bin/tcc-boot0