diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 40b31d5..98c37de 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        resolver: [nightly, lts-17, lts-16, lts-14]
+        resolver: [nightly, lts-20, lts-19]
         # Bugs in GHC make it crash too often to be worth running
         #exclude:
         #  - os: windows-latest
diff --git a/package.yaml b/package.yaml
index 5b6a7e5..af0e545 100644
--- a/package.yaml
+++ b/package.yaml
@@ -35,11 +35,9 @@ tests:
     source-dirs: test
     ghc-options:
     - -threaded
-    - -rtsopts
-    - -with-rtsopts=-N
     dependencies:
     - base64-bytestring
-    - hspec == 2.*
+    - hspec >= 2.8.3 && < 3
     - temporary
     - typed-process
   typed-process-test-single-threaded:
diff --git a/test/SpecHook.hs b/test/SpecHook.hs
new file mode 100644
index 0000000..cfb1f0d
--- /dev/null
+++ b/test/SpecHook.hs
@@ -0,0 +1,7 @@
+module SpecHook where
+
+import           Test.Hspec
+import           GHC.Conc
+
+hook :: Spec -> Spec
+hook spec = runIO (getNumProcessors >>= setNumCapabilities) >> parallel spec