diff --git a/Cargo.lock b/Cargo.lock
index 48b2985..606c829 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -240,7 +240,7 @@ checksum = "e3e3a3aec6ffc35ac360113d8b96206c38961afef56b0c5632cb77cd2f4429b9"
 dependencies = [
  "serde",
  "serde_json",
- "tucana 0.0.39",
+ "tucana",
 ]
 
 [[package]]
@@ -259,7 +259,7 @@ dependencies = [
  "serde_json",
  "tonic",
  "tonic-health",
- "tucana 0.0.39",
+ "tucana",
 ]
 
 [[package]]
@@ -1679,7 +1679,7 @@ dependencies = [
  "tokio",
  "tonic",
  "tonic-health",
- "tucana 0.0.36",
+ "tucana",
 ]
 
 [[package]]
@@ -1997,21 +1997,6 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "tucana"
-version = "0.0.36"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0addd0c58b8b458ba668404246c428d4c71382f5a83d29ac69649f5c575bdfc4"
-dependencies = [
- "prost",
- "prost-types",
- "serde",
- "serde_json",
- "tonic",
- "tonic-prost",
- "tonic-prost-build",
-]
-
 [[package]]
 name = "tucana"
 version = "0.0.39"
diff --git a/Cargo.toml b/Cargo.toml
index b3420df..85bd2b1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ edition = "2024"
 
 [dependencies]
 code0-flow = { version = "0.0.18" }
-tucana = { version = "0.0.36" }
+tucana = { version = "0.0.39" }
 tokio = { version = "1.44.1", features = ["rt-multi-thread"] }
 log = "0.4.27"
 futures-lite = "2.6.0"
diff --git a/src/context/mod.rs b/src/context/mod.rs
index e858586..826051e 100644
--- a/src/context/mod.rs
+++ b/src/context/mod.rs
@@ -137,26 +137,7 @@ impl Context {
 
     /// Looks up the context of a reference
     pub fn get(&self, reference: &ReferenceValue) -> Option<ContextResult> {
-        for (context, value) in self.layers.iter() {
-            if context.primary_level != reference.primary_level {
-                continue;
-            }
-
-            if context.secondary_level != reference.secondary_level {
-                continue;
-            }
-
-            if let Some(index) = reference.tertiary_level {
-                let params = &value.parameter;
-
-                let real_index = index as usize;
-                let value = params.index(real_index);
-                return Some(ContextResult::ParameterResult(value.clone()));
-            }
-
-            return Some(ContextResult::NodeExecutionResult(value.result.clone()));
-        }
-        None
+        unimplemented!("Implement latest reference pattern from Tucana 0.0.39")
     }
 
     pub fn is_end(&self) -> bool {