diff --git a/.circleci/config.yml b/.circleci/config.yml
index 62d388ce..e3721790 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -17,7 +17,7 @@ version: 2.1
     - run:
         name: Run the tests in a container
         command: |
-          docker run -e CI=true -e PQCLEAN_ONLY_DIFF=1 --rm -v `pwd`:`pwd` -w `pwd` "pqclean/ci-container:$ARCH" /bin/bash -c "
+          docker run -e CI=true -e PQCLEAN_ONLY_DIFF=1 -e PQCLEAN_SKIP_SCHEMES=sphincs-haraka-128f-robust,sphincs-haraka-192s-robust,sphincs-sha256-128f-robust,sphincs-sha256-192s-robust,sphincs-shake256-128f-robust,sphincs-shake256-192s-robust,sphincs-haraka-128f-simple,sphincs-haraka-192s-simple,sphincs-sha256-128f-simple,sphincs-sha256-192s-simple,sphincs-shake256-128f-simple,sphincs-shake256-192s-simple,sphincs-haraka-128s-robust,sphincs-haraka-256f-robust,sphincs-sha256-128s-robust,sphincs-sha256-256f-robust,sphincs-shake256-128s-robust,sphincs-shake256-256f-robust,sphincs-haraka-128s-simple,sphincs-haraka-256f-simple,sphincs-sha256-128s-simple,sphincs-sha256-256f-simple,sphincs-shake256-128s-simple,sphincs-shake256-256f-simple,sphincs-haraka-192f-robust,sphincs-haraka-256s-robust,sphincs-sha256-192f-robust,sphincs-sha256-256s-robust,sphincs-shake256-192f-robust,sphincs-shake256-256s-robust,sphincs-haraka-192f-simple,sphincs-haraka-256s-simple,sphincs-sha256-192f-simple,sphincs-sha256-256s-simple,sphincs-shake256-192f-simple,sphincs-shake256-256s-simple --rm -v `pwd`:`pwd` -w `pwd` "pqclean/ci-container:$ARCH" /bin/bash -c "
           uname -a &&
           export CC=${CC} &&
           pip3 install -r requirements.txt &&
@@ -38,6 +38,7 @@ version: 2.1
         command: |
           export CC=${CC}
           export PQCLEAN_ONLY_DIFF=1
+          export PQCLEAN_SKIP_SCHEMES=sphincs-haraka-128f-robust,sphincs-haraka-192s-robust,sphincs-sha256-128f-robust,sphincs-sha256-192s-robust,sphincs-shake256-128f-robust,sphincs-shake256-192s-robust,sphincs-haraka-128f-simple,sphincs-haraka-192s-simple,sphincs-sha256-128f-simple,sphincs-sha256-192s-simple,sphincs-shake256-128f-simple,sphincs-shake256-192s-simple,sphincs-haraka-128s-robust,sphincs-haraka-256f-robust,sphincs-sha256-128s-robust,sphincs-sha256-256f-robust,sphincs-shake256-128s-robust,sphincs-shake256-256f-robust,sphincs-haraka-128s-simple,sphincs-haraka-256f-simple,sphincs-sha256-128s-simple,sphincs-sha256-256f-simple,sphincs-shake256-128s-simple,sphincs-shake256-256f-simple,sphincs-haraka-192f-robust,sphincs-haraka-256s-robust,sphincs-sha256-192f-robust,sphincs-sha256-256s-robust,sphincs-shake256-192f-robust,sphincs-shake256-256s-robust,sphincs-haraka-192f-simple,sphincs-haraka-256s-simple,sphincs-sha256-192f-simple,sphincs-sha256-256s-simple,sphincs-shake256-192f-simple,sphincs-shake256-256s-simple
           pip3 install -r requirements.txt
           mkdir test-results
           cd test
diff --git a/appveyor.yml b/appveyor.yml
index c021142b..0b3da3fb 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,6 +9,7 @@ shallow_clone: false
 
 environment:
   PQCLEAN_ONLY_DIFF: 1
+  PQCLEAN_SKIP_SCHEMES: sphincs-haraka-128f-robust,sphincs-haraka-192s-robust,sphincs-sha256-128f-robust,sphincs-sha256-192s-robust,sphincs-shake256-128f-robust,sphincs-shake256-192s-robust,sphincs-haraka-128f-simple,sphincs-haraka-192s-simple,sphincs-sha256-128f-simple,sphincs-sha256-192s-simple,sphincs-shake256-128f-simple,sphincs-shake256-192s-simple,sphincs-haraka-128s-robust,sphincs-haraka-256f-robust,sphincs-sha256-128s-robust,sphincs-sha256-256f-robust,sphincs-shake256-128s-robust,sphincs-shake256-256f-robust,sphincs-haraka-128s-simple,sphincs-haraka-256f-simple,sphincs-sha256-128s-simple,sphincs-sha256-256f-simple,sphincs-shake256-128s-simple,sphincs-shake256-256f-simple,sphincs-haraka-192f-robust,sphincs-haraka-256s-robust,sphincs-sha256-192f-robust,sphincs-sha256-256s-robust,sphincs-shake256-192f-robust,sphincs-shake256-256s-robust,sphincs-haraka-192f-simple,sphincs-haraka-256s-simple,sphincs-sha256-192f-simple,sphincs-sha256-256s-simple,sphincs-shake256-192f-simple,sphincs-shake256-256s-simple
   matrix:
     - BITS: 64
     - BITS: 32