diff --git a/.github/workflows/BuildDeployDoc.yml b/.github/workflows/BuildDeployDoc.yml
index 72f563c..5c0550a 100644
--- a/.github/workflows/BuildDeployDoc.yml
+++ b/.github/workflows/BuildDeployDoc.yml
@@ -19,10 +19,6 @@ jobs:
       - uses: julia-actions/setup-julia@v1
         with:
           version: "1.10"
-      - name: Add custom registry
-        run: |
-          julia --project=docs/ -e 'import Pkg; Pkg.Registry.add(Pkg.RegistrySpec(url="https://github.com/QEDjl-project/registry.git"));'
-          julia --project=docs/ -e 'import Pkg; Pkg.Registry.add(Pkg.RegistrySpec(url="https://github.com/JuliaRegistries/General"));'
       - name: Install dependencies
         run: |
           julia --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.instantiate()'
diff --git a/.github/workflows/CompatHelper.yml b/.github/workflows/CompatHelper.yml
index a59021c..5d1669e 100644
--- a/.github/workflows/CompatHelper.yml
+++ b/.github/workflows/CompatHelper.yml
@@ -27,12 +27,6 @@ jobs:
           ENV["JULIA_PKG_SERVER"] = ""
           Pkg.Registry.add("General")
         shell: julia --color=yes {0}
-      - name: "Add QEDjl-project custom registry"
-        run: |
-          import Pkg
-          ENV["JULIA_PKG_SERVER"] = ""
-          Pkg.Registry.add(Pkg.RegistrySpec(url="https://github.com/QEDjl-project/registry.git"))
-        shell: julia --color=yes {0}
       - name: "Install CompatHelper"
         run: |
           import Pkg
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a2883dc..759e128 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,8 +9,6 @@ stages:
   script:
     - apt update && apt install -y git
     - git clone --depth 1 -b dev https://github.com/QEDjl-project/QuantumElectrodynamics.jl.git /QEDjl
-    - julia --project=. -e 'import Pkg; Pkg.Registry.add(Pkg.RegistrySpec(url="https://github.com/QEDjl-project/registry.git"));'
-    - julia --project=. -e 'import Pkg; Pkg.Registry.add(Pkg.RegistrySpec(url="https://github.com/JuliaRegistries/General"));'
     - >
       if [[ $CI_COMMIT_BRANCH == "main" || $CI_COMMIT_REF_NAME == "main" || $CI_COMMIT_BRANCH == "dev" || $CI_COMMIT_REF_NAME == "dev" ]]; then
         # set name of the commit message from CI_COMMIT_MESSAGE to NO_MESSAGE, that the script does not read accidentally custom packages from the commit message of a merge commit
@@ -72,10 +70,6 @@ generate_integration_tests:
     - apt update && apt install -y git
     - git clone --depth 1 -b dev https://github.com/QEDjl-project/QuantumElectrodynamics.jl.git /QEDjl
     - cd /QEDjl/.ci/integTestGen/
-    # use local registry of the QED project
-    - julia --project=. -e 'import Pkg; Pkg.Registry.add(Pkg.RegistrySpec(url="https://github.com/QEDjl-project/registry.git"));'
-    # needs to add General registry again, if local registry was added
-    - julia --project=. -e 'import Pkg; Pkg.Registry.add(Pkg.RegistrySpec(url="https://github.com/JuliaRegistries/General"));'
     - julia --project=. -e 'import Pkg; Pkg.instantiate()'
     # paths of artifacts are relative to CI_PROJECT_DIR
     - >