diff --git a/docs/Project.toml b/docs/Project.toml
index d447000ee..567ab3d22 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -15,3 +15,4 @@ VoronoiFVM = "82b139dc-5afc-11e9-35da-9b9bdfd336f3"
 [compat]
 Literate = ">=0.2.7"
 Pluto = ">=0.17.4"
+Documenter = "1"
diff --git a/docs/make.jl b/docs/make.jl
index e1477281e..f4ef405b0 100644
--- a/docs/make.jl
+++ b/docs/make.jl
@@ -1,4 +1,5 @@
-using Documenter, VoronoiFVM, Literate, PlutoSliderServer, ExtendableGrids, GridVisualize, Pkg
+using Documenter,
+    VoronoiFVM, Literate, PlutoSliderServer, ExtendableGrids, GridVisualize, Pkg
 using LinearAlgebra
 
 #
@@ -16,25 +17,25 @@ end
 
 
 
-function make_all(; with_examples = true, run_notebooks = true, example=nothing)
+function make_all(; with_examples = true, run_notebooks = true, example = nothing)
 
     generated_examples = []
-    notebooks  = []
+    notebooks = []
     notebooks = []
     example_jl_dir = joinpath(@__DIR__, "..", "examples")
     example_md_dir = joinpath(@__DIR__, "src", "examples")
     notebook_html_dir = joinpath(@__DIR__, "src", "nbhtml")
-    
-    with_examples && rm(example_md_dir, recursive = true, force=true)
-    run_notebooks && rm(notebook_html_dir, recursive = true, force=true)
-    
+
+    with_examples && rm(example_md_dir, recursive = true, force = true)
+    run_notebooks && rm(notebook_html_dir, recursive = true, force = true)
+
     if run_notebooks
-        notebookenv=joinpath(@__DIR__,"..","pluto-examples")
+        notebookenv = joinpath(@__DIR__, "..", "pluto-examples")
         Pkg.activate(notebookenv)
-        Pkg.develop(path=joinpath(@__DIR__, ".."))
+        Pkg.develop(path = joinpath(@__DIR__, ".."))
         Pkg.instantiate()
 
-        ENV["PLUTO_PROJECT"]=notebookenv
+        ENV["PLUTO_PROJECT"] = notebookenv
         notebooks = [
             "Outflow boundary conditions" => "outflow.jl",
             "Obtaining vector fields" => "flux-reconstruction.jl",
@@ -43,10 +44,10 @@ function make_all(; with_examples = true, run_notebooks = true, example=nothing)
             "Nonlinear solver control" => "nonlinear-solvers.jl",
             "API Updates" => "api-update.jl",
         ]
-        
+
         notebookjl = last.(notebooks)
         notebookmd = []
-        
+
         # function rendernotebook(name)
         #     base=split(name,".")[1]
         #     input=joinpath(@__DIR__,"..","pluto-examples",base*".jl")
@@ -55,22 +56,22 @@ function make_all(; with_examples = true, run_notebooks = true, example=nothing)
         #     html_contents=PlutoStaticHTML.notebook2html(input;session)
         #     write(output, html_contents)
         # end
-        
-        
+
+
         # for notebook in notebookjl
         #     @info "Converting $(notebook)"
         #     rendernotebook(notebook)
         # end
-        
 
-        
+
+
         export_directory(
             joinpath(@__DIR__, "..", "pluto-examples"),
             notebook_paths = notebookjl,
             Export_output_dir = joinpath(notebook_html_dir),
             Export_offer_binder = false,
         )
-        
+
         # generate frame markdown for each notebook
         for notebook in notebookjl
             base = split(notebook, ".")[1]
@@ -84,29 +85,29 @@ function make_all(; with_examples = true, run_notebooks = true, example=nothing)
 <iframe style="height:20000px" width="100%" src="../$(base).html"> </iframe>
 ```
 """
-# <iframe sandbox="allow-same-origin" onload="this.style.height=(this.contentWindow.document.body.scrollHeight+20)+'px';" width="100%" src="../$(base).html"> </iframe>
+            # <iframe sandbox="allow-same-origin" onload="this.style.height=(this.contentWindow.document.body.scrollHeight+20)+'px';" width="100%" src="../$(base).html"> </iframe>
             mdname = base * ".md"
             push!(notebookmd, joinpath("nbhtml", mdname))
             io = open(joinpath(notebook_html_dir, mdname), "w")
             write(io, mdstring)
             close(io)
         end
-            
+
         notebooks = first.(notebooks) .=> notebookmd
         pushfirst!(notebooks, "About the notebooks" => "notebooks.md")
     end
-    
+
 
     if with_examples
         #
         # Generate Markdown pages from examples
         #
-        if example==nothing
-            example_sources=readdir(example_jl_dir)
+        if example == nothing
+            example_sources = readdir(example_jl_dir)
         else
-            example_sources=[example]
+            example_sources = [example]
         end
-        for example_source in  example_sources
+        for example_source in example_sources
             base, ext = splitext(example_source)
             if ext == ".jl"
                 source_url =
@@ -130,10 +131,11 @@ function make_all(; with_examples = true, run_notebooks = true, example=nothing)
 
     makedocs(
         sitename = "VoronoiFVM.jl",
-        modules = [VoronoiFVM,VoronoiFVM.SolverStrategies],
+        modules = [VoronoiFVM, VoronoiFVM.SolverStrategies],
         checkdocs = :all,
         clean = false,
         doctest = true,
+        warnonly = true,
         authors = "J. Fuhrmann",
         repo = "https://github.com/j-fu/VoronoiFVM.jl",
         pages = [
@@ -157,8 +159,8 @@ function make_all(; with_examples = true, run_notebooks = true, example=nothing)
         ],
     )
 
-    with_examples && rm(example_md_dir, recursive = true, force=true)
-    run_notebooks && rm(notebook_html_dir, recursive = true, force=true)
+    with_examples && rm(example_md_dir, recursive = true, force = true)
+    run_notebooks && rm(notebook_html_dir, recursive = true, force = true)
 
     if !isinteractive()
         deploydocs(repo = "github.com/j-fu/VoronoiFVM.jl.git")