diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 61efe51be..577da3eaa 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,10 +15,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-        with:
-          targets: wasm32-unknown-unknown
-      - uses: Swatinem/rust-cache@v2
+      - name: Install Toolchain
+        run: |
+          rustup update stable && rustup default stable
+          rustup target add wasm32-unknown-unknown
+      - uses: taiki-e/install-action@sccache
       - uses: taiki-e/install-action@nextest
       - uses: foundry-rs/foundry-toolchain@v1
 
diff --git a/compiler/src/compiler.rs b/compiler/src/compiler.rs
index 44e6801dd..242d14455 100644
--- a/compiler/src/compiler.rs
+++ b/compiler/src/compiler.rs
@@ -1,6 +1,7 @@
 //! Zink compiler
 
 use crate::{parser::Parser, Artifact, Config, Error, Result};
+use std::collections::HashMap;
 use zabi::Abi;
 use zingen::{
     wasm::{self, Env},
@@ -11,7 +12,7 @@ use zingen::{
 #[derive(Default)]
 pub struct Compiler {
     /// ABIs of the compiled contract.
-    pub(crate) abi: Vec<Abi>,
+    pub(crate) abi: HashMap<String, Abi>,
     /// EVM bytecode buffer.
     pub(crate) buffer: Buffer,
     /// Compiler configuration.
@@ -59,7 +60,7 @@ impl Compiler {
 
         tracing::debug!("code length: {}", buffer.len());
         Ok(Artifact {
-            abi,
+            abi: abi.into_values().collect(),
             config,
             runtime_bytecode: buffer.to_vec(),
         })
@@ -73,7 +74,9 @@ impl Compiler {
         let env = parser.env.clone();
 
         if !self.config.dispatcher {
-            self.abi.append(&mut env.load_abis(&selectors)?);
+            for abi in env.load_abis(&selectors)? {
+                self.abi.insert(abi.name.clone(), abi);
+            }
             return Ok(());
         }
 
@@ -84,7 +87,9 @@ impl Compiler {
             return Err(Error::BufferOverflow(self.buffer.len()));
         }
 
-        self.abi.append(&mut dispatcher.abi);
+        for abi in dispatcher.abi {
+            self.abi.insert(abi.name.clone(), abi);
+        }
         Ok(())
     }
 
@@ -124,6 +129,6 @@ impl Compiler {
     /// Get abi from env and function index
     fn abi(&self, env: &Env, index: u32) -> Option<Abi> {
         let name = env.exports.get(&index)?;
-        self.abi.iter().find(|a| name == &a.name).cloned()
+        self.abi.get(name).cloned()
     }
 }
diff --git a/zink/examples/log.rs b/zink/examples/log.rs
index 50c8ca8b9..14b22384f 100644
--- a/zink/examples/log.rs
+++ b/zink/examples/log.rs
@@ -126,6 +126,42 @@ mod tests {
             assert_eq!(info.logs[0].topics()[0].to_vec(), value4.bytes32().to_vec());
         }
     }
+
+    #[test]
+    fn test_log_abi() {
+        let contract = Contract::search("log")
+            .unwrap()
+            .compile()
+            .expect("failed to compile");
+        let abi = contract.artifact.abi;
+
+        assert_eq!(abi.len(), 5);
+
+        let test_log0 = abi.iter().find(|a| a.name == "test_log0").unwrap();
+        assert_eq!(test_log0.inputs.len(), 0);
+
+        let test_log1 = abi.iter().find(|a| a.name == "test_log1").unwrap();
+        assert_eq!(test_log1.inputs.len(), 1);
+        assert_eq!(test_log1.inputs[0].ty.to_string(), "uint256");
+
+        let test_log2 = abi.iter().find(|a| a.name == "test_log2").unwrap();
+        assert_eq!(test_log2.inputs.len(), 2);
+        assert_eq!(test_log2.inputs[0].ty.to_string(), "uint256");
+        assert_eq!(test_log2.inputs[1].ty.to_string(), "uint256");
+
+        let test_log3 = abi.iter().find(|a| a.name == "test_log3").unwrap();
+        assert_eq!(test_log3.inputs.len(), 3);
+        assert_eq!(test_log3.inputs[0].ty.to_string(), "uint256");
+        assert_eq!(test_log3.inputs[1].ty.to_string(), "uint256");
+        assert_eq!(test_log3.inputs[2].ty.to_string(), "uint256");
+
+        let test_log4 = abi.iter().find(|a| a.name == "test_log4").unwrap();
+        assert_eq!(test_log4.inputs.len(), 4);
+        assert_eq!(test_log4.inputs[0].ty.to_string(), "uint256");
+        assert_eq!(test_log4.inputs[1].ty.to_string(), "uint256");
+        assert_eq!(test_log4.inputs[2].ty.to_string(), "uint256");
+        assert_eq!(test_log4.inputs[3].ty.to_string(), "uint256");
+    }
 }
 
 #[cfg(not(target_arch = "wasm32"))]