diff --git a/crates/uv-configuration/src/trusted_host.rs b/crates/uv-configuration/src/trusted_host.rs
index 910fe6991de04..0d63dd5cd37a3 100644
--- a/crates/uv-configuration/src/trusted_host.rs
+++ b/crates/uv-configuration/src/trusted_host.rs
@@ -1,8 +1,7 @@
-use serde::{Deserialize, Serialize};
 use url::Url;
 
 /// A trusted host, which could be a host or a host-port pair.
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct TrustedHost {
     scheme: Option<String>,
     host: String,
@@ -32,6 +31,26 @@ impl TrustedHost {
     }
 }
 
+impl<'de> serde::de::Deserialize<'de> for TrustedHost {
+    fn deserialize<D>(deserializer: D) -> Result<TrustedHost, D::Error>
+    where
+        D: serde::de::Deserializer<'de>,
+    {
+        let s = String::deserialize(deserializer)?;
+        s.parse().map_err(serde::de::Error::custom)
+    }
+}
+
+impl serde::Serialize for TrustedHost {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::ser::Serializer,
+    {
+        let s = self.to_string();
+        serializer.serialize_str(&s)
+    }
+}
+
 #[derive(Debug, thiserror::Error)]
 pub enum TrustedHostError {
     #[error("missing host for `--trusted-host`: `{0}`")]
@@ -73,6 +92,22 @@ impl std::str::FromStr for TrustedHost {
     }
 }
 
+impl std::fmt::Display for TrustedHost {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        if let Some(scheme) = &self.scheme {
+            write!(f, "{}://{}", scheme, self.host)?;
+        } else {
+            write!(f, "{}", self.host)?;
+        }
+
+        if let Some(port) = self.port {
+            write!(f, ":{}", port)?;
+        }
+
+        Ok(())
+    }
+}
+
 #[cfg(feature = "schemars")]
 impl schemars::JsonSchema for TrustedHost {
     fn schema_name() -> String {
diff --git a/crates/uv/tests/show_settings.rs b/crates/uv/tests/show_settings.rs
index d6c4fd8aecc42..7e9d8efa9e128 100644
--- a/crates/uv/tests/show_settings.rs
+++ b/crates/uv/tests/show_settings.rs
@@ -3407,3 +3407,143 @@ fn resolve_skip_empty() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+/// Deserialize an insecure host.
+#[test]
+#[cfg_attr(
+    windows,
+    ignore = "Configuration tests are not yet supported on Windows"
+)]
+fn allow_insecure_host() -> anyhow::Result<()> {
+    let context = TestContext::new("3.12");
+
+    let config = context.temp_dir.child("uv.toml");
+    config.write_str(indoc::indoc! {r#"
+        allow-insecure-host = ["google.com"]
+    "#})?;
+
+    let requirements_in = context.temp_dir.child("requirements.in");
+    requirements_in.write_str("anyio>3.0.0")?;
+
+    uv_snapshot!(context.filters(), add_shared_args(context.pip_compile())
+        .arg("--show-settings")
+        .arg("requirements.in"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    GlobalSettings {
+        quiet: false,
+        verbose: 0,
+        color: Auto,
+        native_tls: false,
+        concurrency: Concurrency {
+            downloads: 50,
+            builds: 16,
+            installs: 8,
+        },
+        connectivity: Online,
+        show_settings: true,
+        preview: Disabled,
+        python_preference: OnlySystem,
+        python_downloads: Automatic,
+        no_progress: false,
+    }
+    CacheSettings {
+        no_cache: false,
+        cache_dir: Some(
+            "[CACHE_DIR]/",
+        ),
+    }
+    PipCompileSettings {
+        src_file: [
+            "requirements.in",
+        ],
+        constraint: [],
+        override: [],
+        build_constraint: [],
+        constraints_from_workspace: [],
+        overrides_from_workspace: [],
+        environments: SupportedEnvironments(
+            [],
+        ),
+        refresh: None(
+            Timestamp(
+                SystemTime {
+                    tv_sec: [TIME],
+                    tv_nsec: [TIME],
+                },
+            ),
+        ),
+        settings: PipSettings {
+            index_locations: IndexLocations {
+                index: None,
+                extra_index: [],
+                flat_index: [],
+                no_index: false,
+            },
+            python: None,
+            system: false,
+            extras: None,
+            break_system_packages: false,
+            target: None,
+            prefix: None,
+            index_strategy: FirstIndex,
+            keyring_provider: Disabled,
+            allow_insecure_host: [
+                TrustedHost {
+                    scheme: None,
+                    host: "google.com",
+                    port: None,
+                },
+            ],
+            no_build_isolation: false,
+            no_build_isolation_package: [],
+            build_options: BuildOptions {
+                no_binary: None,
+                no_build: None,
+            },
+            allow_empty_requirements: false,
+            strict: false,
+            dependency_mode: Transitive,
+            resolution: Highest,
+            prerelease: IfNecessaryOrExplicit,
+            output_file: None,
+            no_strip_extras: false,
+            no_strip_markers: false,
+            no_annotate: false,
+            no_header: false,
+            custom_compile_command: None,
+            generate_hashes: false,
+            config_setting: ConfigSettings(
+                {},
+            ),
+            python_version: None,
+            python_platform: None,
+            universal: false,
+            exclude_newer: Some(
+                ExcludeNewer(
+                    2024-03-25T00:00:00Z,
+                ),
+            ),
+            no_emit_package: [],
+            emit_index_url: false,
+            emit_find_links: false,
+            emit_build_options: false,
+            emit_marker_expression: false,
+            emit_index_annotation: false,
+            annotation_style: Split,
+            link_mode: Clone,
+            compile_bytecode: false,
+            sources: Enabled,
+            hash_checking: None,
+            upgrade: None,
+            reinstall: None,
+        },
+    }
+
+    ----- stderr -----
+    "###
+    );
+
+    Ok(())
+}