diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e053c3f..fc9769d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -53,12 +53,12 @@ jobs:
          # - variant: focal
          #   container: null
          #   sudo: sudo
+         - variant: bookworm
+           container: rust:bookworm
+           sudo: null
          - variant: bullseye
            container: rust:bullseye
            sudo: null
-         - variant: buster
-           container: rust:buster
-           sudo: null
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
diff --git a/Cargo.toml b/Cargo.toml
index 7c2bc03..19a1844 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -46,19 +46,15 @@ assets = [
     ["README.md", "usr/share/doc/t-rex/README", "644"],
 ]
 #depends = "$auto"
-depends = "libssl1.1, libgdal26"
-revision = "1~focal"
-
-[package.metadata.deb.variants.focal]
-# default: is Ubuntu Focal Fossa 20.04 (LTS) 
-
-[package.metadata.deb.variants.jammy]
 depends = "libssl3, libgdal30"
 revision = "1~jammy"
 
-[package.metadata.deb.variants.buster]
-depends = "libssl1.1, libgdal20"
-revision = "1~buster"
+[package.metadata.deb.variants.jammy]
+# default: is Ubuntu Jammy Jellyfish 22.04 (LTS) 
+
+[package.metadata.deb.variants.bookworm]
+depends = "libssl3, libgdal32"
+revision = "1~bookworm"
 
 [package.metadata.deb.variants.bullseye]
 depends = "libssl1.1, libgdal28"