diff --git a/Project.toml b/Project.toml
index 007b104b..28bc2ef5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -33,10 +33,12 @@ AbstractMCMCTensorBoardLoggerExt = "TensorBoardLogger"
 BangBang = "0.3.19, 0.4"
 ConsoleProgressMonitor = "0.1"
 FillArrays = "1"
+IJulia = "1"
 LogDensityProblems = "2"
 LoggingExtras = "0.4, 0.5, 1"
 OnlineStats = "1.5"
 ProgressLogging = "0.1"
+Statistics = "1"
 StatsBase = "0.32, 0.33, 0.34"
 TensorBoardLogger = "0.1"
 TerminalLoggers = "0.1"
diff --git a/test/logdensityproblems.jl b/test/logdensityproblems.jl
index 4a3a22d5..9eaa3913 100644
--- a/test/logdensityproblems.jl
+++ b/test/logdensityproblems.jl
@@ -5,7 +5,7 @@
     pids = addprocs(Sys.iswindows() ? div(Sys.CPU_THREADS::Int, 2) : Sys.CPU_THREADS::Int)
 
     # Load all required packages (`utils.jl` needs LogDensityProblems, Logging, and Random).
-    @everywhere begin
+    @everywhere workers() begin
         using AbstractMCMC
         using AbstractMCMC: sample
         using LogDensityProblems
diff --git a/test/sample.jl b/test/sample.jl
index 954acc7c..0e15a456 100644
--- a/test/sample.jl
+++ b/test/sample.jl
@@ -250,7 +250,7 @@
         )
 
         # Load all required packages (`utils.jl` needs LogDensityProblems, Logging, and Random).
-        @everywhere begin
+        @everywhere workers() begin
             using AbstractMCMC
             using AbstractMCMC: sample
             using LogDensityProblems