diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4cad8387..8de18043 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -15,6 +15,7 @@ jobs:
           command: |
             apt update && apt install -y gfortran
             cargo test --no-default-features --features=openblas
+            cargo test --no-default-features --features=openblas,serde-1
 
   test-netlib:
     <<: *rust_cfg
@@ -25,6 +26,7 @@ jobs:
           command: |
             apt update && apt install -y cmake gfortran
             cargo test --no-default-features --features=netlib
+            cargo test --no-default-features --features=netlib,serde-1
 
   test-intel-mkl:
     <<: *rust_cfg
@@ -32,7 +34,9 @@ jobs:
       - checkout
       - run:
           name: test Intel MKL backend
-          command: cargo test --no-default-features --features=intel-mkl
+          command: |
+            cargo test --no-default-features --features=intel-mkl
+            cargo test --no-default-features --features=intel-mkl,serde-1
 
 workflows:
   version: 2
diff --git a/Cargo.toml b/Cargo.toml
index d760f358..8038d5aa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,7 @@ accelerate = ["lapack-src/accelerate", "blas-src/accelerate"]
 intel-mkl  = ["lapack-src/intel-mkl", "blas-src/intel-mkl"]
 netlib     = ["lapack-src/netlib", "blas-src/netlib", "netlib-src"]
 openblas   = ["lapack-src/openblas", "blas-src/openblas", "openblas-src"]
+serde-1    = ["ndarray/serde-1", "num-complex/serde"]
 
 [dependencies]
 derive-new = "0.5"