diff --git a/.github/workflows/Format.yml b/.github/workflows/Format.yml
new file mode 100644
index 00000000..dd2b2c50
--- /dev/null
+++ b/.github/workflows/Format.yml
@@ -0,0 +1,12 @@
+name: Format suggestions
+on:
+  pull_request:
+    # this argument is not required if you don't use the `suggestion-label` input
+    types: [opened, reopened, synchronize, labeled, unlabeled]
+jobs:
+  code-style:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: julia-actions/julia-format@v4
+        with:
+          version: '1' # Set `version` to '1.0.54' if you need to use JuliaFormatter.jl v1.0.54 (default: '1')
diff --git a/ext/SparseMatrixColoringsColorsExt.jl b/ext/SparseMatrixColoringsColorsExt.jl
index 7f844e89..c934b5e9 100644
--- a/ext/SparseMatrixColoringsColorsExt.jl
+++ b/ext/SparseMatrixColoringsColorsExt.jl
@@ -271,9 +271,8 @@ function show_colors!(
     A_ccolor_indices = mod1.(column_colors(res), length(colorscheme))
     A_rcolor_indices = mod1.(row_shift .+ row_colors(res), length(colorscheme))
     B_ccolor_indices = mod1.(1:maximum(column_colors(res)), length(colorscheme))
-    B_rcolor_indices = mod1.(
-        (row_shift + 1):(row_shift + maximum(row_colors(res))), length(colorscheme)
-    )
+    B_rcolor_indices =
+        mod1.((row_shift + 1):(row_shift + maximum(row_colors(res))), length(colorscheme))
     A_ccolors = colorscheme[A_ccolor_indices]
     A_rcolors = colorscheme[A_rcolor_indices]
     B_ccolors = colorscheme[B_ccolor_indices]
diff --git a/src/postprocessing.jl b/src/postprocessing.jl
index 9b0443b2..7b2b58f5 100644
--- a/src/postprocessing.jl
+++ b/src/postprocessing.jl
@@ -109,9 +109,7 @@ function postprocess_with_star_set!(
 end
 
 function postprocess_with_tree_set!(
-    color_used::Vector{Bool},
-    color::AbstractVector{<:Integer},
-    tree_set::TreeSet,
+    color_used::Vector{Bool}, color::AbstractVector{<:Integer}, tree_set::TreeSet
 )
     # only the colors of non-leaf vertices are used
     (; reverse_bfs_orders, is_star, tree_edge_indices, nt) = tree_set
diff --git a/test/Project.toml b/test/Project.toml
index 217d62c9..284f410b 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -15,7 +15,6 @@ Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 HiGHS = "87dc4568-4c63-4d18-b0c0-bb2238e4078b"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 JuMP = "4076af6c-e467-56ae-b986-b466b2749572"
-JuliaFormatter = "98e50ef6-434e-11e9-1051-2b60c6c9e899"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 MatrixDepot = "b51810bb-c9f3-55da-ae3c-350fc1fbce05"
 MiniZinc = "a7f392d2-6c35-496e-b8cc-0974fbfcbf91"
diff --git a/test/runtests.jl b/test/runtests.jl
index 7a070756..9494e5e2 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,7 +1,6 @@
 using Aqua
 using Documenter
 using JET
-using JuliaFormatter
 using SparseMatrixColorings
 using Test
 
@@ -19,17 +18,13 @@ include("utils.jl")
     else
         @testset verbose = true "Code quality" begin
             @testset "Aqua" begin
-                Aqua.test_all(SparseMatrixColorings; stale_deps = (; ignore = [:Requires]))
+                Aqua.test_all(SparseMatrixColorings; undocumented_names=true)
             end
             @testset "JET" begin
-                JET.test_package(SparseMatrixColorings; target_defined_modules = true)
-            end
-            # @testset "JuliaFormatter" begin
-            # TODO: switch to Runic (temporarily deactivated)
-            # @test JuliaFormatter.format(
-            #     SparseMatrixColorings; verbose=false, overwrite=false
-            # )
-            # end
+                JET.test_package(
+                    SparseMatrixColorings; target_modules=(SparseMatrixColorings,)
+                )
+            end
             @testset "Doctests" begin
                 Documenter.doctest(SparseMatrixColorings)
             end