diff --git a/crates/jrsonnet-stdlib/Cargo.toml b/crates/jrsonnet-stdlib/Cargo.toml
index 910afc5e..8fdba162 100644
--- a/crates/jrsonnet-stdlib/Cargo.toml
+++ b/crates/jrsonnet-stdlib/Cargo.toml
@@ -16,9 +16,13 @@ exp-preserve-order = ["jrsonnet-evaluator/exp-preserve-order"]
 # Bigint type
 exp-bigint = ["dep:num-bigint", "jrsonnet-evaluator/exp-bigint"]
 
-exp-null-coaelse = ["jrsonnet-parser/exp-null-coaelse", "jrsonnet-evaluator/exp-null-coaelse"]
+exp-null-coaelse = [
+    "jrsonnet-parser/exp-null-coaelse",
+    "jrsonnet-evaluator/exp-null-coaelse",
+]
 # std.regexMatch and other helpers
 exp-regex = ["dep:regex", "dep:lru", "dep:rustc-hash"]
+yaml = ["dep:serde_yaml_with_quirks"]
 
 [dependencies]
 jrsonnet-evaluator.workspace = true
@@ -42,7 +46,7 @@ base64.workspace = true
 # std.parseJson
 serde_json.workspace = true
 # std.parseYaml, custom library fork is used for C++/golang compatibility
-serde_yaml_with_quirks.workspace = true
+serde_yaml_with_quirks = { workspace = true, optional = true }
 
 num-bigint = { workspace = true, optional = true }
 
diff --git a/crates/jrsonnet-stdlib/src/lib.rs b/crates/jrsonnet-stdlib/src/lib.rs
index de84777f..0a476d39 100644
--- a/crates/jrsonnet-stdlib/src/lib.rs
+++ b/crates/jrsonnet-stdlib/src/lib.rs
@@ -176,6 +176,7 @@ pub fn stdlib_uncached(settings: Rc<RefCell<Settings>>) -> ObjValue {
 		("manifestIni", builtin_manifest_ini::INST),
 		// Parse
 		("parseJson", builtin_parse_json::INST),
+		#[cfg(feature = "yaml")]
 		("parseYaml", builtin_parse_yaml::INST),
 		// Strings
 		("codepoint", builtin_codepoint::INST),
diff --git a/crates/jrsonnet-stdlib/src/parse.rs b/crates/jrsonnet-stdlib/src/parse.rs
index 0b91ba6f..d200a5cf 100644
--- a/crates/jrsonnet-stdlib/src/parse.rs
+++ b/crates/jrsonnet-stdlib/src/parse.rs
@@ -1,5 +1,4 @@
 use jrsonnet_evaluator::{function::builtin, runtime_error, IStr, Result, Val};
-use serde::Deserialize;
 
 #[builtin]
 pub fn builtin_parse_json(str: IStr) -> Result<Val> {
@@ -9,8 +8,11 @@ pub fn builtin_parse_json(str: IStr) -> Result<Val> {
 }
 
 #[builtin]
+#[cfg(feature = "yaml")]
 pub fn builtin_parse_yaml(str: IStr) -> Result<Val> {
+	use serde::Deserialize;
 	use serde_yaml_with_quirks::DeserializingQuirks;
+
 	let value = serde_yaml_with_quirks::Deserializer::from_str_with_quirks(
 		&str,
 		DeserializingQuirks { old_octals: true },