diff --git a/Project.toml b/Project.toml
index ff0122e8..9eedc951 100644
--- a/Project.toml
+++ b/Project.toml
@@ -32,6 +32,7 @@ ChainRulesCore = "1"
 DiffRules = "1"
 DiffTests = "0.1"
 Distributions = "0.25"
+Documenter = "1"
 ExprTools = "0.1"
 FillArrays = "1"
 Graphs = "1"
@@ -50,6 +51,7 @@ AbstractGPs = "99985d1d-32ba-4be9-9821-2ec096f28918"
 BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"
 DiffTests = "de460e47-3fe3-5279-bb4a-814414816d5d"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
+Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 FillArrays = "1a297f60-69ca-5386-bcde-b61e274b549b"
 KernelFunctions = "ec8451be-7e33-11e9-00cf-bbf324bd1392"
 LogDensityProblemsAD = "996a588d-648d-4e1f-a8f0-a84b347e47b1"
@@ -62,4 +64,4 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Turing = "fce5fe82-541a-59a6-adf8-730c64b5f9a0"
 
 [targets]
-test = ["AbstractGPs", "BenchmarkTools", "DiffTests", "Distributions", "FillArrays", "KernelFunctions", "LogDensityProblemsAD", "PDMats", "ReverseDiff", "SpecialFunctions", "StableRNGs", "Test", "Turing", "TemporalGPs"]
+test = ["AbstractGPs", "BenchmarkTools", "DiffTests", "Distributions", "Documenter", "FillArrays", "KernelFunctions", "LogDensityProblemsAD", "PDMats", "ReverseDiff", "SpecialFunctions", "StableRNGs", "Test", "Turing", "TemporalGPs"]
diff --git a/test/front_matter.jl b/test/front_matter.jl
index 32ed8395..f0022248 100644
--- a/test/front_matter.jl
+++ b/test/front_matter.jl
@@ -1,6 +1,7 @@
 using
     BenchmarkTools,
     DiffRules,
+    Documenter,
     FillArrays,
     JET,
     LinearAlgebra,
diff --git a/test/runtests.jl b/test/runtests.jl
index 6f731887..73137c46 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -17,6 +17,7 @@ include("front_matter.jl")
             include(joinpath("interpreter", "zero_like_rdata.jl"))
             include(joinpath("interpreter", "s2s_reverse_mode_ad.jl"))
         end
+        doctest(Tapir)
     elseif test_group == "rrules"
         include("test_utils.jl")
         @testset "rrules" begin