diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9069dde357a..cc4e69450c8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -66,6 +66,7 @@ jobs:
       TEST_DATABASE_URL: postgres://postgres:@localhost/cargo_registry_test
       CARGO_INCREMENTAL: 0
       RUSTFLAGS: "-C debuginfo=0 -D warnings"
+      MALLOC_CONF: "background_thread:true,abort_conf:true,abort:true,junk:true"
 
     steps:
       - uses: actions/checkout@v2-beta
diff --git a/.travis.yml b/.travis.yml
index ea12b7cc85c..e2653f1438a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,6 +28,7 @@ env:
     - PGPORT=5433
     - PATH=$HOME/.cargo/bin:$PATH
     - RUSTFLAGS="-C debuginfo=0 -D warnings"
+    - MALLOC_CONF=background_thread:true,abort_conf:true,abort:true,junk:true
 
 install:
   - sudo cp /etc/postgresql/10/main/pg_hba.conf /etc/postgresql/11/main/pg_hba.conf