diff --git a/Project.toml b/Project.toml
index 443d173..88d1d36 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Antique"
 uuid = "be6e5d0e-34a5-4c8f-af83-e1b5389203d8"
 authors = ["Shuhei Ohno"]
-version = "0.4.1"
+version = "0.4.2"
 
 [deps]
 SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
diff --git a/developer/docs.jl b/developer/docs.jl
index 9f49792..7a4f2ab 100644
--- a/developer/docs.jl
+++ b/developer/docs.jl
@@ -1,4 +1,4 @@
 # run `include("./developer/docs.jl")`
-run(`julia --project=docs/ -e 'try; using Plots; catch; using Pkg; Pkg.add("Plots"); end;'`)
-run(`julia --project=docs/ -e 'try; using Documenter; catch; using Pkg; Pkg.add("Documenter"); end;'`)
+# run(`julia --project=docs/ -e 'try; using Plots; catch; using Pkg; Pkg.add("Plots"); end;'`)
+# run(`julia --project=docs/ -e 'try; using Documenter; catch; using Pkg; Pkg.add("Documenter"); end;'`)
 run(`julia --project=docs/ -e 'using Pkg; Pkg.activate("./"); cd("docs"); include("make.jl")'`)