diff --git a/Cargo.toml b/Cargo.toml
index 8352dcb..6a8e4e8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,9 @@ version = "0.1.0"
 
 [dependencies]
 cortex-m = "0.7.0"
-flash-algorithm = "0.4.0"
+flash-algorithm = { version = "0.4.0", default-features = false, features = [
+    "panic-handler",
+] }
 
 # this lets you use `cargo fix`!
 [[bin]]
diff --git a/build.sh b/build.sh
index b0e5f67..345ccd4 100755
--- a/build.sh
+++ b/build.sh
@@ -30,5 +30,4 @@ cat <<EOF
     pc_uninit: $(sym UnInit)
     pc_program_page: $(sym ProgramPage)
     pc_erase_sector: $(sym EraseSector)
-    pc_erase_all: $(sym EraseChip)
 EOF
diff --git a/rust-toolchain b/rust-toolchain.toml
similarity index 100%
rename from rust-toolchain
rename to rust-toolchain.toml
diff --git a/src/main.rs b/src/main.rs
index 9477de2..44237f6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -74,11 +74,6 @@ impl FlashAlgorithm for RP2040Algo {
         Ok(Self { funcs })
     }
 
-    fn erase_all(&mut self) -> Result<(), ErrorCode> {
-        // todo
-        Err(ErrorCode::new(0x70d0).unwrap())
-    }
-
     fn erase_sector(&mut self, addr: u32) -> Result<(), ErrorCode> {
         (self.funcs.flash_range_erase)(
             addr - FlashDevice.dev_addr,