diff --git a/bins/revme/src/cmd/eofvalidation.rs b/bins/revme/src/cmd/eofvalidation.rs
index 40d0696225..47f9802f6d 100644
--- a/bins/revme/src/cmd/eofvalidation.rs
+++ b/bins/revme/src/cmd/eofvalidation.rs
@@ -1,6 +1,6 @@
 mod test_suite;
 
-pub use test_suite::{PragueTestResult, TestResult, TestSuite, TestUnit, TestVector};
+pub use test_suite::{TestResult, TestSuite, TestUnit, TestVector};
 
 use crate::{cmd::Error, dir_utils::find_all_json_tests};
 use clap::Parser;
@@ -81,13 +81,14 @@ pub fn run_test(path: &Path) -> Result<(), Error> {
                 } else {
                     Some(CodeType::ReturnOrStop)
                 };
+                let test_result = test_vector.results.get("Osaka");
                 let res = validate_raw_eof_inner(test_vector.code.clone(), kind);
-                if res.is_ok() != test_vector.results.prague.result {
+                if test_result.map(|r| r.result).unwrap_or(res.is_ok()) != res.is_ok() {
                     println!(
                         "\nTest failed: {} - {}\nresult:{:?}\nrevm err_result:{:#?}\nbytes:{:?}\n",
                         name,
                         vector_name,
-                        test_vector.results.prague,
+                        test_result.unwrap().result,
                         res.as_ref().err(),
                         test_vector.code
                     );
diff --git a/bins/revme/src/cmd/eofvalidation/test_suite.rs b/bins/revme/src/cmd/eofvalidation/test_suite.rs
index 4fbb8fe676..de76123a37 100644
--- a/bins/revme/src/cmd/eofvalidation/test_suite.rs
+++ b/bins/revme/src/cmd/eofvalidation/test_suite.rs
@@ -19,14 +19,7 @@ pub struct TestUnit {
 pub struct TestVector {
     pub code: Bytes,
     pub container_kind: Option<String>,
-    pub results: PragueTestResult,
-}
-
-#[derive(Debug, PartialEq, Eq, Deserialize)]
-#[serde(deny_unknown_fields)]
-pub struct PragueTestResult {
-    #[serde(rename = "Prague")]
-    pub prague: TestResult,
+    pub results: BTreeMap<String, TestResult>,
 }
 
 #[derive(Debug, PartialEq, Eq, Deserialize)]
diff --git a/bins/revme/src/cmd/statetest/runner.rs b/bins/revme/src/cmd/statetest/runner.rs
index 9dc709ac41..cefdc6d700 100644
--- a/bins/revme/src/cmd/statetest/runner.rs
+++ b/bins/revme/src/cmd/statetest/runner.rs
@@ -343,16 +343,12 @@ pub fn execute_test_suite(
             // Constantinople was immediately extended by Petersburg.
             // There isn't any production Constantinople transaction
             // so we don't support it and skip right to Petersburg.
-            if spec_name == SpecName::Constantinople || spec_name == SpecName::Osaka {
+            if spec_name == SpecName::Constantinople {
                 continue;
             }
 
             // Enable EOF in Prague tests.
-            let spec_id = if spec_name == SpecName::Prague {
-                SpecId::PRAGUE_EOF
-            } else {
-                spec_name.to_spec_id()
-            };
+            let spec_id = spec_name.to_spec_id();
 
             if spec_id.is_enabled_in(SpecId::MERGE) && env.block.prevrandao.is_none() {
                 // if spec is merge and prevrandao is not set, set it to default
diff --git a/crates/revm/src/context/evm_context.rs b/crates/revm/src/context/evm_context.rs
index ce60aa07e7..19030dc017 100644
--- a/crates/revm/src/context/evm_context.rs
+++ b/crates/revm/src/context/evm_context.rs
@@ -101,7 +101,11 @@ where
         address: &Address,
         input_data: &Bytes,
         gas: Gas,
+        is_ext_delegate: bool,
     ) -> EVMResultGeneric<Option<InterpreterResult>, EvmWiringT> {
+        if is_ext_delegate {
+            return Ok(None);
+        }
         let Some(outcome) =
             self.precompiles
                 .call(address, input_data, gas.limit(), &mut self.inner)
diff --git a/crates/statetest-types/src/spec.rs b/crates/statetest-types/src/spec.rs
index fd24c54167..dff9c09b8f 100644
--- a/crates/statetest-types/src/spec.rs
+++ b/crates/statetest-types/src/spec.rs
@@ -50,10 +50,10 @@ impl SpecName {
             Self::Shanghai => SpecId::SHANGHAI,
             Self::Cancun => SpecId::CANCUN,
             Self::Prague => SpecId::PRAGUE,
+            Self::Osaka => SpecId::OSAKA,
             Self::ByzantiumToConstantinopleAt5 | Self::Constantinople => {
                 panic!("Overridden with PETERSBURG")
             }
-            Self::Osaka => panic!("Osaka is not implemented"),
             Self::Unknown => panic!("Unknown spec"),
         }
     }