diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6387057..2a04826 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,7 +27,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        feature: [ stl, std, all, secp256k1, curve25519 ]
+        feature: [ default, stl, std, all, secp256k1, curve25519 ]
     steps:
       - uses: actions/checkout@v2
       - name: Install rust stable
diff --git a/Cargo.toml b/Cargo.toml
index 9418747..91af72e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ half = "2.1.0"
 serde_crate = { package = "serde", version = "1", optional = true }
 
 [features]
-default = []
+default = ["std"]
 all = ["stl", "std", "secp256k1", "curve25519", "serde"]
 stl = ["strict_types/base64", "std"]
 std = [