diff --git a/src/LocalCoverage.jl b/src/LocalCoverage.jl
index 6be9c11..a1da9a8 100644
--- a/src/LocalCoverage.jl
+++ b/src/LocalCoverage.jl
@@ -76,6 +76,16 @@ Clean up after [`generate_coverage`](@ref).
 """
 function clean_coverage(pkg)
     Coverage.clean_folder(Pkg.dir(pkg))
+    for path in DEPOT_PATH
+        isdir(path) || continue
+        try
+            Coverage.clean_folder(path)
+        catch e
+            if !(e isa SystemError #= eg. permission denied =#)
+                rethrow()
+            end
+        end
+    end
     rm(Pkg.dir(pkg, COVDIR); force = true, recursive = true)
 end