diff --git a/tools/Cargo.toml b/tools/Cargo.toml
index fc616a0..d6ee9c4 100644
--- a/tools/Cargo.toml
+++ b/tools/Cargo.toml
@@ -17,9 +17,9 @@ name = "opgpcard"
 path = "src/opgpcard.rs"
 
 [dependencies]
-sequoia-openpgp = "1.3"
+sequoia-openpgp = { version = "1.3", default-features = false }
 openpgp-card-pcsc = { path = "../pcsc", version = "0.3" }
-openpgp-card-sequoia = { path = "../openpgp-card-sequoia", version = "0.1" }
+openpgp-card-sequoia = { path = "../openpgp-card-sequoia", version = "0.1.1", default-features = false }
 sshkeys = "0.3.2"
 pem = "1"
 rpassword = "6"
@@ -41,5 +41,8 @@ subplot-build = "0.5.0"
 fehler = "1.0.0"
 subplotlib = "0.5.0"
 
+[features]
+default = ["sequoia-openpgp/default"]
+
 [package.metadata.cargo-udeps.ignore]
 development = ["fehler", "subplotlib"]