diff --git a/tf-m-eclair-delta.yaml b/tf-m-eclair-delta.yaml
index 7a71e6a..1d77db8 100644
--- a/tf-m-eclair-delta.yaml
+++ b/tf-m-eclair-delta.yaml
@@ -75,7 +75,7 @@
           default: 'https://github.com/laurencelundblade/QCBOR.git'
       - string:
           name: 'QCBOR_VERSION'
-          default: '92d3f89030baff4af7be8396c563e6c8ef263622'
+          default: ''
           description: |
             Specify which QCBOR version to use
             refs/heads/<branch_name> : Pick up latest HEAD on branch
@@ -83,7 +83,7 @@
             full commit hash         : Pick up a specific commit
       - string:
           name: 'MCUBOOT_REFSPEC'
-          default: 'v1.10.0'
+          default: ''
           description: |
             Specify which MCUboot version to use
             refs/heads/<branch_name> : Pick up latest HEAD on branch
@@ -97,13 +97,13 @@
           default: 'https://git.trustedfirmware.org/TF-M/tf-m-tests.git'
       - string:
           name: 'TFM_TESTS_REFSPEC'
-          default: 'refs/heads/master'
+          default: ''
       - string:
           name: 'PSA_ARCH_TESTS_URL'
           default: 'https://git.trustedfirmware.org/mirror/psa-arch-tests.git'
       - string:
           name: 'PSA_ARCH_TESTS_VERSION'
-          default: '5c5792080f0975775bbdddcd9722da446dce550b'
+          default: ''
       - string:
           name: SHARE_FOLDER
           default: '/tmp'