diff --git a/.ci/set_dev_dependencies.jl b/.ci/set_dev_dependencies.jl
new file mode 100644
index 0000000..33447dd
--- /dev/null
+++ b/.ci/set_dev_dependencies.jl
@@ -0,0 +1,102 @@
+"""
+The script sets all QED dependencies of QED dependencies to the version of the current
+development branch. For our example we use the project QEDprocess which has a dependency
+to QEDfields and QEDfields has a dependency to QEDcore (I haven't checked if this is the
+case, it's just hypothetical). If we install the dev-branch version of QEDfields, the last
+registered version of QEDcore is still installed. If QEDfields uses a function which only
+exist in dev branch of QEDcore and is not released yet, the integration test will fail.
+
+The script needs to be executed the project space, which should be modified.
+"""
+
+using Pkg
+
+# TODO(SimeonEhrig): is copied from integTestGen.jl
+"""
+    _match_package_filter(
+        package_filter::Union{<:AbstractString,Regex},
+        package::AbstractString
+    )::Bool
+
+Check if `package_filter` contains `package`. Wrapper function for `contains()` and `in()`.
+
+# Returns
+
+- `true` if it matches.
+
+"""
+function _match_package_filter(
+    package_filter::Union{<:AbstractString,Regex}, package::AbstractString
+)::Bool
+    return contains(package, package_filter)
+end
+
+"""
+    _match_package_filter(
+        package_filter::AbstractVector{<:AbstractString},
+        package::AbstractString
+    )::Bool
+"""
+function _match_package_filter(
+    package_filter::AbstractVector{<:AbstractString}, package::AbstractString
+)::Bool
+    return package in package_filter
+end
+
+"""
+    get_filtered_dependencies(
+        name_filter::Union{<:AbstractString,Regex}=r".*",
+        project_source=Pkg.dependencies()
+    )::AbstractVector{Pkg.API.PackageInfo}
+
+Takes the project_dependencies and filter it by the name_filter. Removes also the UUID as
+dict key.
+
+# Returns
+
+- `Vector` of filtered dependencies.
+"""
+function get_filtered_dependencies(
+    name_filter::Union{<:AbstractString,Regex}=r".*",
+    project_dependencies=Pkg.dependencies(),
+)::AbstractVector{Pkg.API.PackageInfo}
+    deps = Vector{Pkg.API.PackageInfo}(undef, 0)
+    for (uuid, dep) in project_dependencies
+        if _match_package_filter(name_filter, dep.name)
+            push!(deps, dep)
+        end
+    end
+    return deps
+end
+
+"""
+    set_dev_dependencies(
+        dependencies::AbstractVector{Pkg.API.PackageInfo},
+        custom_urls::AbstractDict{String,String}=Dict{String,String}(),
+    )
+
+Set all dependencies to the development version, if they are not already development versions.
+The dict custom_urls takes as key a dependency name and a URL as value. If a dependency is in
+custom_urls, it will use the URL as development version. If the dependency does not exist in
+custom_urls, it will set the URL https://github.com/QEDjl-project/<dependency_name>.jl
+"""
+function set_dev_dependencies(
+    dependencies::AbstractVector{Pkg.API.PackageInfo},
+    custom_urls::AbstractDict{String,String}=Dict{String,String}(),
+)
+    for dep in dependencies
+        # if tree_hash is nothing, it is already a dev version
+        if !isnothing(dep.tree_hash)
+            if haskey(custom_urls, dep.name)
+                Pkg.develop(; url=custom_urls[dep.name])
+            else
+                Pkg.develop(; url="https://github.com/QEDjl-project/$(dep.name).jl")
+            end
+        end
+    end
+end
+
+if abspath(PROGRAM_FILE) == @__FILE__
+    deps = get_filtered_dependencies(r"^QED*")
+    set_dev_dependencies(deps)
+end