diff --git a/charts/cf-runtime/.ci/image-digests.sh b/charts/cf-runtime/.ci/image-digests.sh
index 2bec2de2..e4dd3dc9 100755
--- a/charts/cf-runtime/.ci/image-digests.sh
+++ b/charts/cf-runtime/.ci/image-digests.sh
@@ -9,6 +9,6 @@ docker run \
     -u $(id -u) \
     --rm \
     --entrypoint /bin/sh \
-    regclient/regctl:v0.7.2-alpine \
+    quay.io/codefresh/codefresh-shell:0.0.20 \
     -c \
     cd /venona && ./scripts/update_values_with_digests.sh
\ No newline at end of file
diff --git a/scripts/update_values_with_digests.sh b/scripts/update_values_with_digests.sh
index 17f938db..4d9933cc 100755
--- a/scripts/update_values_with_digests.sh
+++ b/scripts/update_values_with_digests.sh
@@ -9,12 +9,12 @@ runtime_images=$(yq e '.runtime.engine.runtimeImages' $VALUES_FILE)
 
 while read -r line; do
     key=${line%%:*}
-    image=${line#*:}
+    full_image=${line#*: }
+    image=${full_image%%@*}
     digest=$(regctl manifest digest $image)
-    yq e -i ".runtime.engine.runtimeImages.$key |= . + \"@$digest\"" $VALUES_FILE
+    yq e -i ".runtime.engine.runtimeImages.$key = \"$image@$digest\"" $VALUES_FILE
 done <<< "$runtime_images"
 
-
 get_image_digest() {
   local registry=$1
   local repository=$2