diff --git a/Makefile b/Makefile
index 11e7e315..6b39dc69 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,7 @@ test: cargotest
 cargotest:
 	@rustup component add rustfmt 2> /dev/null
 	@cargo test
+	@cargo test --all-features
 	@cargo test --no-default-features
 	@cd cargo-insta; cargo test
 
diff --git a/tests/snapshots/test_redaction__user.snap b/tests/snapshots/test_redaction__user.snap
index 8deb31de..f74f62d3 100644
--- a/tests/snapshots/test_redaction__user.snap
+++ b/tests/snapshots/test_redaction__user.snap
@@ -1,8 +1,8 @@
 ---
 source: tests/test_redaction.rs
-expression: "&User{id: Uuid::new_v4(),\n      username: \"john_doe\".to_string(),\n      email: Email(\"john@example.com\".to_string()),\n      extra: \"\".to_string(),}"
+expression: "&User{id: 23,\n      username: \"john_doe\".to_string(),\n      email: Email(\"john@example.com\".to_string()),\n      extra: \"\".to_string(),}"
 ---
-id: "[uuid]"
+id: "[id]"
 username: john_doe
 email: john@example.com
 extra: ""
diff --git a/tests/snapshots/test_redaction__user_json.snap b/tests/snapshots/test_redaction__user_json.snap
index d6101231..c8ed9d88 100644
--- a/tests/snapshots/test_redaction__user_json.snap
+++ b/tests/snapshots/test_redaction__user_json.snap
@@ -1,9 +1,9 @@
 ---
 source: tests/test_redaction.rs
-expression: "&User{id: Uuid::new_v4(),\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"ssn goes here\".to_string(),}"
+expression: "&User{id: 9999,\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"ssn goes here\".to_string(),}"
 ---
 {
-  "id": "[uuid]",
+  "id": "[id]",
   "username": "jason_doe",
   "email": "jason@example.com",
   "extra": "[extra]"
diff --git a/tests/snapshots/test_redaction__user_json_settings.snap b/tests/snapshots/test_redaction__user_json_settings.snap
index d6101231..c7429973 100644
--- a/tests/snapshots/test_redaction__user_json_settings.snap
+++ b/tests/snapshots/test_redaction__user_json_settings.snap
@@ -1,9 +1,9 @@
 ---
 source: tests/test_redaction.rs
-expression: "&User{id: Uuid::new_v4(),\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"ssn goes here\".to_string(),}"
+expression: "&User{id: 122,\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"ssn goes here\".to_string(),}"
 ---
 {
-  "id": "[uuid]",
+  "id": "[id]",
   "username": "jason_doe",
   "email": "jason@example.com",
   "extra": "[extra]"
diff --git a/tests/snapshots/test_redaction__user_json_settings_callback.snap b/tests/snapshots/test_redaction__user_json_settings_callback.snap
index f224ac66..e80e7e81 100644
--- a/tests/snapshots/test_redaction__user_json_settings_callback.snap
+++ b/tests/snapshots/test_redaction__user_json_settings_callback.snap
@@ -1,9 +1,9 @@
 ---
 source: tests/test_redaction.rs
-expression: "&User{id: Uuid::new_v4(),\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"extra here\".to_string(),}"
+expression: "&User{id: 1234,\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"extra here\".to_string(),}"
 ---
 {
-  "id": "[uuid]",
+  "id": "[id]",
   "username": "jason_doe",
   "email": "jason@example.com",
   "extra": "extra here"
diff --git a/tests/snapshots/test_redaction__user_ron.snap b/tests/snapshots/test_redaction__user_ron.snap
index cdc270a8..da83abb3 100644
--- a/tests/snapshots/test_redaction__user_ron.snap
+++ b/tests/snapshots/test_redaction__user_ron.snap
@@ -1,11 +1,9 @@
 ---
-created: "2019-02-01T13:47:54.698182Z"
-creator: insta@0.6.0
 source: tests/test_redaction.rs
-expression: "&User{id: Uuid::new_v4(),\n      username: \"john_ron\".to_string(),\n      email: Email(\"john@example.com\".to_string()),\n      extra: \"\".to_string(),}"
+expression: "&User{id: 53,\n      username: \"john_ron\".to_string(),\n      email: Email(\"john@example.com\".to_string()),\n      extra: \"\".to_string(),}"
 ---
 User(
-  id: "[uuid]",
+  id: "[id]",
   username: "john_ron",
   email: Email("john@example.com"),
   extra: "",
diff --git a/tests/snapshots/test_redaction__with_random_value_json_settings2.snap b/tests/snapshots/test_redaction__with_random_value_json_settings2.snap
index d6101231..72e4e062 100644
--- a/tests/snapshots/test_redaction__with_random_value_json_settings2.snap
+++ b/tests/snapshots/test_redaction__with_random_value_json_settings2.snap
@@ -1,9 +1,9 @@
 ---
 source: tests/test_redaction.rs
-expression: "&User{id: Uuid::new_v4(),\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"ssn goes here\".to_string(),}"
+expression: "&User{id: 975,\n      username: \"jason_doe\".to_string(),\n      email: Email(\"jason@example.com\".to_string()),\n      extra: \"ssn goes here\".to_string(),}"
 ---
 {
-  "id": "[uuid]",
+  "id": "[id]",
   "username": "jason_doe",
   "email": "jason@example.com",
   "extra": "[extra]"
diff --git a/tests/test_redaction.rs b/tests/test_redaction.rs
index 8ec62acb..0e6f637e 100644
--- a/tests/test_redaction.rs
+++ b/tests/test_redaction.rs
@@ -42,7 +42,7 @@ fn test_with_random_value() {
         email: Email("john@example.com".to_string()),
         extra: "".to_string(),
     }, {
-        ".id" => "[uuid]"
+        ".id" => "[id]"
     });
 }
 
@@ -56,16 +56,8 @@ fn test_with_random_value_inline_callback() {
     }, {
         ".id" => insta::dynamic_redaction(|value, path| {
             assert_eq!(path.to_string(), ".id");
-            assert_eq!(
-                value
-                    .as_str()
-                    .unwrap()
-                    .chars()
-                    .filter(|&c| c == '-')
-                    .count(),
-                4
-            );
-            "[uuid]"
+            assert_eq!(value.as_u64().unwrap(), 23);
+            "[id]"
         }),
     });
 }
@@ -78,7 +70,7 @@ fn test_with_random_value_and_trailing_comma() {
         email: Email("john@example.com".to_string()),
         extra: "".to_string(),
     }, {
-        ".id" => "[uuid]",
+        ".id" => "[id]",
     });
 }
 
@@ -92,7 +84,7 @@ fn test_with_random_value_ron() {
         email: Email("john@example.com".to_string()),
         extra: "".to_string(),
     }, {
-        ".id" => "[uuid]"
+        ".id" => "[id]"
     });
 }
 
@@ -104,7 +96,7 @@ fn test_with_random_value_json() {
         email: Email("jason@example.com".to_string()),
         extra: "ssn goes here".to_string(),
     }, {
-        ".id" => "[uuid]",
+        ".id" => "[id]",
         ".extra" => "[extra]"
     });
 }
@@ -112,7 +104,7 @@ fn test_with_random_value_json() {
 #[test]
 fn test_with_random_value_json_settings() {
     let mut settings = Settings::new();
-    settings.add_redaction(".id", "[uuid]");
+    settings.add_redaction(".id", "[id]");
     settings.add_redaction(".extra", "[extra]");
     settings.bind(|| {
         assert_json_snapshot!(
@@ -132,16 +124,8 @@ fn test_with_callbacks() {
     let mut settings = Settings::new();
     settings.add_dynamic_redaction(".id", |value, path| {
         assert_eq!(path.to_string(), ".id");
-        assert_eq!(
-            value
-                .as_str()
-                .unwrap()
-                .chars()
-                .filter(|&c| c == '-')
-                .count(),
-            4
-        );
-        "[uuid]"
+        assert_eq!(value.as_u64().unwrap(), 1234);
+        "[id]"
     });
     settings.bind(|| {
         assert_json_snapshot!(
@@ -159,7 +143,7 @@ fn test_with_callbacks() {
 #[test]
 fn test_with_random_value_json_settings2() {
     with_settings!({redactions => vec![
-        (".id", "[uuid]".into()),
+        (".id", "[id]".into()),
         (".extra", "[extra]".into()),
     ]}, {
         assert_json_snapshot!(