diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 02ee9c3f8..22e69061e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,7 +25,7 @@ node dependencies:
   stage: frontend:build
   script:
     - nix -L build -o result .#uniworxNodeDependencies
-    - nix-store --export $(nix-store -qR result) | xz > node-dependencies.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > node-dependencies.nar.xz
   before_script: &nix-before
     - mkdir -p /etc/nix
     - install -m 0644 .gitlab-ci/nix-bootstrap.conf /etc/nix/nix.conf
@@ -56,7 +56,7 @@ well known:
   script:
     - xzcat node-dependencies.nar.xz | nix-store --import
     - nix -L build -o result .#uniworxWellKnown
-    - nix-store --export $(nix-store -qR result) | xz > well-known.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > well-known.nar.xz
   before_script: *nix-before
   needs:
     - job: node dependencies
@@ -75,7 +75,7 @@ frontend:
     - xzcat node-dependencies.nar.xz | nix-store --import
     - xzcat well-known.nar.xz | nix-store --import
     - nix -L build -o result .#uniworxFrontend
-    - nix-store --export $(nix-store -qR result) | xz > frontend.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > frontend.nar.xz
   before_script: *nix-before
   needs:
     - job: node dependencies
@@ -95,9 +95,13 @@ uniworx:lib:uniworx:
   script:
     - xzcat frontend.nar.xz | nix-store --import
     - nix -L build -o result .#uniworx:lib:uniworx
-    - nix-store --export $(nix-store -qR result) | xz > uniworx:lib:uniworx.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:lib:uniworx.nar.xz
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
     - job: frontend
       artifacts: true
   artifacts:
@@ -113,9 +117,15 @@ uniworx:exe:uniworx:
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
     - nix -L build -o result .#uniworx:exe:uniworx
-    - nix-store --export $(nix-store -qR result) | xz > uniworx:exe:uniworx.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworx.nar.xz
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
     - job: uniworx:lib:uniworx
       artifacts: true
   artifacts:
@@ -131,9 +141,15 @@ uniworx:exe:uniworx-wflint:
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
     - nix -L build -o result .#uniworx:exe:uniworx-wflint
-    - nix-store --export $(nix-store -qR result) | xz > uniworx:exe:uniworx-wflint.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworx-wflint.nar.xz
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
     - job: uniworx:lib:uniworx
       artifacts: true
   artifacts:
@@ -149,9 +165,15 @@ uniworx:exe:uniworxdb:
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
     - nix -L build -o result .#uniworx:exe:uniworxdb
-    - nix-store --export $(nix-store -qR result) | xz > uniworx:exe:uniworxdb.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworxdb.nar.xz
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
     - job: uniworx:lib:uniworx
       artifacts: true
   artifacts:
@@ -167,9 +189,15 @@ uniworx:exe:uniworxload:
   script:
     - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
     - nix -L build -o result .#uniworx:exe:uniworxload
-    - nix-store --export $(nix-store -qR result) | xz > uniworx:exe:uniworxload.nar.xz
+    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworxload.nar.xz
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
     - job: uniworx:lib:uniworx
       artifacts: true
   artifacts:
@@ -188,6 +216,10 @@ check:
     - nix -L flake check
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
     - job: frontend
       artifacts: true
     - job: uniworx:lib:uniworx
@@ -204,9 +236,17 @@ demo docker:
     - cp -pr --reflink=auto -L result uniworx-demo.tar.gz
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
+    - job: uniworx:lib:uniworx # transitive
+      artifacts: false
     - job: uniworx:exe:uniworx
       artifacts: true
-    - job: check
+    - job: check # sanity
       artifacts: false
   artifacts:
     paths:
@@ -226,9 +266,17 @@ docker:
     - cp -pr --reflink=auto -L result uniworx.tar.gz
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
+    - job: uniworx:lib:uniworx # transitive
+      artifacts: false
     - job: uniworx:exe:uniworx
       artifacts: true
-    - job: check
+    - job: check # sanity
       artifacts: false
   artifacts:
     paths:
@@ -268,6 +316,18 @@ upload docker:
     - nix -L run .#pushUniworxDocker
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
+    - job: uniworx:lib:uniworx # transitive
+      artifacts: false
+    - job: uniworx:exe:uniworx # transitive
+      artifacts: false
+    - job: check # transitive
+      artifacts: false
     - job: docker
       artifacts: true
   rules:
@@ -281,6 +341,18 @@ upload demo docker:
     - nix -L run .#pushUniworxDemoDocker
   before_script: *nix-before
   needs:
+    - job: node dependencies # transitive
+      artifacts: false
+    - job: well known # transitive
+      artifacts: false
+    - job: frontend # tranitive
+      artifacts: false
+    - job: uniworx:lib:uniworx # transitive
+      artifacts: false
+    - job: uniworx:exe:uniworx # transitive
+      artifacts: false
+    - job: check # transitive
+      artifacts: false
     - job: demo docker
       artifacts: true
   rules:
@@ -299,3 +371,8 @@ release:
     - export VERSION="$(cat .current-version)"
   script:
     - release-cli create --name "${VERSION}" --tag-name $CI_COMMIT_TAG --description .current-changelog.md
+  needs:
+    - job: check # sanity
+      artifacts: false
+    - job: parse changelog
+      artifacts: true