diff --git a/source.pkr.hcl b/source.pkr.hcl
index 6ee9931..cff6dec 100644
--- a/source.pkr.hcl
+++ b/source.pkr.hcl
@@ -61,8 +61,10 @@ source "qemu" "ubuntu" {
   disk_size        = "150G"
   format           = "qcow2"
   headless         = var.headless
-  iso_checksum     = "file:https://cloud-images.ubuntu.com/jammy/current/SHA256SUMS"
-  iso_url          = "https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-${var.arch}.img"
+  // FIXME: change pin from `20240115` to `current` after a new release is out.
+  // `20240117` has SSH issues that prevent CI from completing.
+  iso_checksum     = "file:https://cloud-images.ubuntu.com/jammy/20240115/SHA256SUMS"
+  iso_url          = "https://cloud-images.ubuntu.com/jammy/20240115/jammy-server-cloudimg-${var.arch}.img"
   memory           = 2048
   output_directory = local.output_directory
   qemu_binary      = "qemu-system-${lookup(local.qemu_arch, var.arch, "")}"