diff --git a/test/Artifacts.toml b/test/Artifacts.toml
index 6e07db6..003db48 100644
--- a/test/Artifacts.toml
+++ b/test/Artifacts.toml
@@ -1,6 +1,6 @@
 [wpd19_10000]
-git-tree-sha1 = "b4e4b99c090cdf72d6c8d1377f2d99259f8184ac"
+git-tree-sha1 = "6da73dbb0ceae824285c607ed25d3903552c6d43"
 
     [[wpd19_10000.download]]
-    sha256 = "c305219849482ffc7f01471bd8a23e16c321a35768f7568c6cbd35fece0e0171"
-    url = "https://korap.ids-mannheim.de/data/wpd19_10000.tar.bz2"
+    sha256 = "5df533a2a1031a0a9b3a2de5a5e7b02690f06bb1c057ae05b01724b9d3b17bb1"
+    url = "https://korap.ids-mannheim.de/data/wpd19_10000.tar.gz"
diff --git a/test/runtests.jl b/test/runtests.jl
index e0ff466..bc29554 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -41,4 +41,14 @@
         @test wpd19.total_tokens == wpd19_freqlist.total_tokens
         @test isapprox(kld(wpd19_freqlist, wpd19).kld, 0)
     end
+
+    @testset "DerekoVecs.jl: collocation analysis" begin
+        if (!isnothing(wpd19.cdb))
+            println(wpd19.vocab[30])
+            coll = get_collocates(wpd19, "werden")
+            @test coll[1].ldaf > 10
+            @test coll[1].ldaf > coll[3].ldaf
+        end
+    end
+
 end