diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e81e961..83547b6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -50,13 +50,13 @@ jobs:
         include:
           - name: Minimal
             runner: test
-            features: --no-default-features
+            args: -p purl --no-default-features
           - name: Default
             runner: test
-            features: ""
+            args: -p purl
           - name: Full
             runner: tarpaulin
-            features: --all-features
+            args: --all-features
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
@@ -73,4 +73,4 @@ jobs:
         rm tarpaulin.tar.gz
 
     - name: Run tests
-      run: cargo ${{ matrix.runner }} ${{ matrix.features }}
+      run: cargo ${{ matrix.runner }} ${{ matrix.args }}
diff --git a/purl/src/builder.rs b/purl/src/builder.rs
index 66dfb89..ff24166 100644
--- a/purl/src/builder.rs
+++ b/purl/src/builder.rs
@@ -10,11 +10,10 @@ use crate::{GenericPurl, ParseError, PurlParts, PurlShape, SmallString};
 /// # Example
 ///
 /// ```
-/// // `PurlBuilder` is an alias for `GenericPurlBuilder<PackageType>`.
-/// use purl::{PackageType, PurlBuilder};
+/// use purl::GenericPurlBuilder;
 ///
 /// // Use the builder if you want to set fields besides the type and name.
-/// let purl = PurlBuilder::new(PackageType::Maven, "my-package")
+/// let purl = GenericPurlBuilder::new(String::from("maven"), "my-package")
 ///     .with_namespace("my.company")
 ///     .build()
 ///     .unwrap();
diff --git a/purl/src/lib.rs b/purl/src/lib.rs
index 5ec66fa..806c777 100644
--- a/purl/src/lib.rs
+++ b/purl/src/lib.rs
@@ -9,6 +9,7 @@ pub use format::*;
 pub use package_type::*;
 pub use parse::*;
 pub use qualifiers::Qualifiers;
+#[cfg(feature = "smartstring")]
 use smartstring::{LazyCompact, SmartString, SmartStringMode};
 
 mod builder;
@@ -181,6 +182,7 @@ impl<'a> PurlShape for Cow<'a, str> {
 /// Without type-specific functionality, it's possible to create PURLs that have
 /// incorrect capitalization or are missing a required namespace or required
 /// qualifiers.
+#[cfg(feature = "smartstring")]
 impl<M> PurlShape for SmartString<M>
 where
     M: SmartStringMode,
@@ -229,11 +231,13 @@ pub struct PurlParts {
 /// # Example
 ///
 /// ```
-/// // `Purl` is an alias for `GenericPurl<PackageType>`.
-/// use purl::{PackageType, Purl};
+/// use purl::GenericPurl;
 ///
 /// // Use the builder if you want to set fields besides the type and name.
-/// let purl = Purl::builder(PackageType::Npm, "my-package").with_version("1.2.3").build().unwrap();
+/// let purl = GenericPurl::builder(String::from("npm"), "my-package")
+///     .with_version("1.2.3")
+///     .build()
+///     .unwrap();
 ///
 /// assert_eq!("pkg:npm/my-package@1.2.3", &purl.to_string());
 /// ```