diff --git a/Cargo.toml b/Cargo.toml
index 305f3dc4..883de7ac 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,15 +24,6 @@ default = ["std"]
 std = ["alloc"]
 alloc = []
 
-[dev-dependencies]
-
-# Check that crate versions are properly updated in documentation and code when
-# bumping the version.
-[dev-dependencies.version-sync]
-version = "0.9.3"
-default-features = false
-features = ["markdown_deps_updated", "html_root_url_updated"]
-
 [package.metadata.docs.rs]
 # This sets the default target to `x86_64-unknown-linux-gnu` and only builds
 # that target. `strftime-ruby` has the same API and code on all targets.
diff --git a/tests/version_numbers.rs b/tests/version_numbers.rs
deleted file mode 100644
index 288592d0..00000000
--- a/tests/version_numbers.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-#[test]
-fn test_readme_deps() {
-    version_sync::assert_markdown_deps_updated!("README.md");
-}
-
-#[test]
-fn test_html_root_url() {
-    version_sync::assert_html_root_url_updated!("src/lib.rs");
-}