diff --git a/.travis.yml b/.travis.yml
index 138fbd5ad..56480d8dc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,8 +8,11 @@ script:
     - xbuild /p:Configuration=Release.NET45 Loyc-Slim.sln
     - xbuild /p:Configuration=Release.NET4 Loyc-Slim.sln
 
-    # Unfortunately, some tests are still broken.
+    # Unfortunately, test set 7 (LLLPG) sometimes fails due to nondeterminism.
     - mono Bin/Release.NET45/Tests.exe 1
     - mono Bin/Release.NET45/Tests.exe 2
+    - mono Bin/Release.NET45/Tests.exe 3
+    - mono Bin/Release.NET45/Tests.exe 4
+    - mono Bin/Release.NET45/Tests.exe 5
+    - mono Bin/Release.NET45/Tests.exe 6
     - mono Bin/Release.NET45/Tests.exe 7
-    - mono Bin/Release.NET45/Tests.exe 8
diff --git a/appveyor.yml b/appveyor.yml
index a6a6b3e0e..1691347b8 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 1.8.0.{build}
+version: 1.8.1.{build}
 
 before_build:
     - nuget restore Loyc-Slim.sln
@@ -23,11 +23,9 @@ after_build:
     # Package ends up in LoycCore.$SEMVER.nupkg
 
 test_script:
-    # Unfortunately, some tests are still broken.
-    - Bin\Release.NET45\Tests.exe 1
-    - Bin\Release.NET45\Tests.exe 2
-    - Bin\Release.NET45\Tests.exe 7
-    - Bin\Release.NET45\Tests.exe 8
+    # Unfortunately, test set 7 (LLLPG) sometimes fails due to nondeterminism.
+    - Bin\Release.NET45\Tests.exe 1234
+    - Bin\Release.NET45\Tests.exe 56
 
 assembly_info:
     patch: true