diff --git a/runtime-builder/checksums/go1.11.12.sha256 b/runtime-builder/checksums/go1.11.12.sha256
new file mode 100644
index 0000000..0ea357c
--- /dev/null
+++ b/runtime-builder/checksums/go1.11.12.sha256
@@ -0,0 +1 @@
+14ec881815eb9e6618f95df5eb385d961283efc196d97912595ba6484a56180d
diff --git a/runtime-builder/checksums/go1.12.7.sha256 b/runtime-builder/checksums/go1.12.7.sha256
new file mode 100644
index 0000000..af5c2f3
--- /dev/null
+++ b/runtime-builder/checksums/go1.12.7.sha256
@@ -0,0 +1 @@
+66d83bfb5a9ede000e33c6579a91a29e6b101829ad41fffb5c5bb6c900e109d9