diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 64554c6..3862466 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,9 +50,9 @@ jobs:
             source $HOME/.cargo/env
 
           run: |
-            $HOME/.cargo/bin/cargo test --release --no-default-features --features pairing,multicore --target ${{ matrix.target }}
-            $HOME/.cargo/bin/cargo test --release --no-default-features --features blst,multicore --target ${{ matrix.target }}
-            $HOME/.cargo/bin/cargo test --release --no-default-features --features blst,multicore,blst-portable --target ${{ matrix.target }}
+            $HOME/.cargo/bin/cargo test --release --no-default-features --features pairing,multicore --target ${{ matrix.target }} -- --test-threads=1
+            $HOME/.cargo/bin/cargo test --release --no-default-features --features blst,multicore --target ${{ matrix.target }} -- --test-threads=1
+            $HOME/.cargo/bin/cargo test --release --no-default-features --features blst,multicore,blst-portable --target ${{ matrix.target }} -- --test-threads=1
 
 #  # Linux tests
 #  linux: