diff --git a/integration-test/integration_test.py b/integration-test/integration_test.py
index eb52e64..ca6fae7 100755
--- a/integration-test/integration_test.py
+++ b/integration-test/integration_test.py
@@ -33,6 +33,7 @@ def color_diff(diff):
     command = ["./target/debug/come",
                "-i", "{}{}/{}.come".format(CASE_DIR, casename, casename),
                "-o", "{}{}/{}.asm".format(CASE_DIR, casename, casename),
+               "-t", "riscv",
                "--emit-ir", "{}{}/{}.cmir".format(CASE_DIR, casename, casename)]
     if path.exists("{}{}/road.json".format(CASE_DIR, casename, casename)):
         road = json.load(
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index f28e14f..c5b3b9f 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "nightly-2023-06-15"
\ No newline at end of file
+channel = "nightly-2024-05-02"
diff --git a/src/backend/riscv/mod.rs b/src/backend/riscv/mod.rs
index b3bc08e..8b3b98e 100644
--- a/src/backend/riscv/mod.rs
+++ b/src/backend/riscv/mod.rs
@@ -220,7 +220,7 @@ fn parse_single_section(
                 .push(index);
         }
     }
-    pending_symbols.drain_filter(|name, indexes| {
+    pending_symbols.extract_if(|name, indexes| {
         if let Some(symbol_offset_bytes) = all_symbols.get(name) {
             for index in indexes {
                 simple_instructions[*index].decide_symbol(&Symbol {
diff --git a/src/lib.rs b/src/lib.rs
index f1eb088..9f4b6f1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,9 +1,8 @@
 #![feature(lazy_cell)]
 #![feature(if_let_guard)]
 #![feature(let_chains)]
-#![feature(hash_drain_filter)]
+#![feature(hash_extract_if)]
 #![feature(exact_size_is_empty)]
-// #![feature(arbitrary_self_types)]
 #![feature(assert_matches)]
 /// Definitions of AST nodes and their parser.
 pub mod ast;