diff --git a/serde_macros/Cargo.toml b/serde_macros/Cargo.toml
index 22557df1..f9c832d2 100644
--- a/serde_macros/Cargo.toml
+++ b/serde_macros/Cargo.toml
@@ -8,8 +8,7 @@ homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"
 documentation = "https://serde.rs/codegen.html"
 keywords = ["serde", "serialization"]
-include = ["Cargo.toml", "src/**/*.rs", "build.rs"]
-build = "build.rs"
+include = ["Cargo.toml", "src/**/*.rs"]
 
 [lib]
 name = "serde_macros"
@@ -18,20 +17,13 @@ plugin = true
 [features]
 unstable-testing = [
     "clippy",
-    "skeptic",
-    "serde_json",
     "serde/unstable-testing",
     "serde_codegen/unstable-testing"
 ]
 
-[build-dependencies]
-skeptic = { version = "^0.6.0", optional = true }
-
 [dependencies]
 clippy = { version = "^0.*", optional = true }
 serde_codegen = { version = "=0.8.4", default-features = false, features = ["unstable"], path = "../serde_codegen" }
-skeptic = { version = "^0.6.0", optional = true }
-serde_json = { version = "0.8.0", optional = true }
 
 [dev-dependencies]
 compiletest_rs = "^0.2.0"
@@ -44,10 +36,6 @@ serde_test = { version = "0.8.4", path = "../serde_test" }
 name = "test"
 path = "tests/test.rs"
 
-[[test]]
-name = "skeptic"
-path = "tests/skeptic.rs"
-
 [[bench]]
 name = "bench"
 path = "benches/bench.rs"
diff --git a/serde_macros/build.rs b/serde_macros/build.rs
deleted file mode 100644
index 0f545500..00000000
--- a/serde_macros/build.rs
+++ /dev/null
@@ -1,18 +0,0 @@
-#[cfg(feature = "unstable-testing")]
-mod inner {
-    extern crate skeptic;
-
-    pub fn main() {
-        println!("cargo:rerun-if-changed=../README.md");
-        skeptic::generate_doc_tests(&["../README.md"]);
-    }
-}
-
-#[cfg(not(feature = "unstable-testing"))]
-mod inner {
-    pub fn main() {}
-}
-
-fn main() {
-    inner::main()
-}
diff --git a/serde_macros/tests/skeptic.rs b/serde_macros/tests/skeptic.rs
deleted file mode 100644
index 47e632d0..00000000
--- a/serde_macros/tests/skeptic.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-#![cfg(feature = "unstable-testing")]
-
-include!(concat!(env!("OUT_DIR"), "/skeptic-tests.rs"));
diff --git a/serde_macros/tests/test.rs b/serde_macros/tests/test.rs
index 94d8338b..e0462787 100644
--- a/serde_macros/tests/test.rs
+++ b/serde_macros/tests/test.rs
@@ -6,4 +6,3 @@ extern crate test;
 include!("../../testing/tests/test.rs.in");
 
 mod compile_tests;
-mod skeptic;