diff --git a/Cargo.toml b/Cargo.toml
index 9d86fd31..6e31cd7e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,6 +42,7 @@ pathdiff = "0.2"
 
 [dev-dependencies]
 serde_derive = "1.0.8"
+serde_yaml = "0.9"
 float-cmp = "0.9"
 chrono = { version = "0.4", features = ["serde"] }
 tokio = { version = "1", features = ["rt-multi-thread", "macros", "fs", "io-util", "time"]}
diff --git a/tests/Settings.yaml b/tests/Settings.yaml
index c7b1549c..10ec3cc1 100644
--- a/tests/Settings.yaml
+++ b/tests/Settings.yaml
@@ -15,3 +15,4 @@ place:
 # For override tests
 FOO: FOO should be overridden
 bar: I am bar
+192.168.1.1: a string value
diff --git a/tests/file_yaml.rs b/tests/file_yaml.rs
index b961c2a6..2fea07ff 100644
--- a/tests/file_yaml.rs
+++ b/tests/file_yaml.rs
@@ -26,6 +26,8 @@ struct Settings {
     place: Place,
     #[serde(rename = "arr")]
     elements: Vec<String>,
+    #[serde(rename = "192.168.1.1")]
+    ip_key: String,
 }
 
 fn make() -> Config {
@@ -35,6 +37,35 @@ fn make() -> Config {
         .unwrap()
 }
 
+#[test]
+fn test_keys_with_periods_deserialize_serde_yaml() {
+    let map = "192.168.1.1: a string value";
+
+    let c: HashMap<String, String> = serde_yaml::from_str(map).unwrap();
+
+    assert_eq!(c.get("192.168.1.1").unwrap(), "a string value");
+}
+
+#[test]
+fn test_keys_with_periods_deserialize_yaml_rust() {
+    use yaml_rust::YamlLoader;
+
+    let map = "192.168.1.1: a string value";
+
+    let c = YamlLoader::load_from_str(map).unwrap().first().unwrap().clone();
+
+    assert_eq!(c["192.168.1.1"].as_str().unwrap(), "a string value");
+}
+
+#[test]
+fn test_keys_with_periods_deserialize() {
+    let c = make();
+
+    let s: Settings = c.try_deserialize().unwrap();
+
+    assert_eq!(s.ip_key, "a string value");
+}
+
 #[test]
 fn test_file() {
     let c = make();