diff --git a/docs/Project.toml b/docs/Project.toml
index dbe85c130d6..9b39cc02972 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -12,6 +12,7 @@ JSONSchema = "7d188eb4-7ad8-530c-ae41-71a32a6d4692"
 JuMP = "4076af6c-e467-56ae-b986-b466b2749572"
 Literate = "98b081ad-f1c9-55d3-8b20-4c87d4299306"
 MathOptInterface = "b8f27783-ece8-5eb3-8dc8-9495eed66fee"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 SCS = "c946c3f1-0d1f-5ce8-9dea-7daa1f7e2d13"
@@ -23,7 +24,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 [compat]
 CSV = "0.10"
 DataFrames = "1"
-Documenter = "0.27.9"
+Documenter = "0.27.9, 0.28"
 GLPK = "=1.1.0"
 HTTP = "1.5.4"
 HiGHS = "=1.2.0"
diff --git a/docs/make.jl b/docs/make.jl
index ea3fb851f59..87ec327462b 100644
--- a/docs/make.jl
+++ b/docs/make.jl
@@ -1,4 +1,5 @@
 import Pkg
+Pkg.pkg"add Documenter#0150642"
 Pkg.pkg"add MutableArithmetics#master"
 
 import Documenter
diff --git a/docs/src/assets/custom.sty b/docs/src/assets/custom.sty
deleted file mode 100644
index e1a0989c94c..00000000000
--- a/docs/src/assets/custom.sty
+++ /dev/null
@@ -1,7 +0,0 @@
-% Override the default styling of {minted} in LaTeX output
- \usepackage{minted,xcolor}
- \definecolor{codeblock-color}{gray}{0.96}
-  \definecolor{codeblock-color2}{gray}{0.8}
- \setminted{bgcolor=codeblock-color,frame=none}
- \lstset{rulecolor=\color{codeblock-color2},frame=single}
- %