diff --git a/.github/workflows/nightly-canary.yml b/.github/workflows/nightly-canary.yml
index ddacb4d..fb614ee 100644
--- a/.github/workflows/nightly-canary.yml
+++ b/.github/workflows/nightly-canary.yml
@@ -8,6 +8,9 @@ on:
 env:
   CARGO_TERM_COLOR: always
 
+permissions:
+  issues: write
+
 jobs:
   test:
     name: Test on Nargo ${{matrix.toolchain}}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6ffba86..d8ab990 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        toolchain: [nightly, 0.32.0]
+        toolchain: [nightly, 0.34.0]
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
@@ -38,7 +38,7 @@ jobs:
       - name: Install Nargo
         uses: noir-lang/noirup@v0.1.3
         with:
-          toolchain: 0.32.0
+          toolchain: 0.34.0
 
       - name: Run formatter
         run: nargo fmt --check
diff --git a/Nargo.toml b/Nargo.toml
index 25c86a9..2a6039d 100644
--- a/Nargo.toml
+++ b/Nargo.toml
@@ -2,6 +2,6 @@
 name = "noir_base64"
 type = "lib"
 authors = [""]
-compiler_version = ">=0.31.0"
+compiler_version = ">=0.34.0"
 
-[dependencies]
\ No newline at end of file
+[dependencies]
diff --git a/src/lib.nr b/src/lib.nr
index 3972e5c..0842356 100644
--- a/src/lib.nr
+++ b/src/lib.nr
@@ -107,7 +107,7 @@ pub fn base64_encode<let InputElements: u32, let OutputBytes: u32>(input: [u8; I
             slice *= 64;
             slice += encoded[i * BASE64_ELEMENTS_PER_CHUNK + j] as Field;
         }
-        let slice_bytes: [u8; 30] = slice.to_be_bytes(30).as_array();
+        let slice_bytes: [u8; 30] = slice.to_be_bytes();
         for j in 0..BYTES_PER_CHUNK {
             result[i * BYTES_PER_CHUNK + j] = slice_bytes[j];
         }
@@ -124,7 +124,7 @@ pub fn base64_encode<let InputElements: u32, let OutputBytes: u32>(input: [u8; I
         slice *= 64;
     }
     // TODO: check is it cheaper to use a constant value in `to_be_bytes` or can we use `bytes_in_final_chunk`?
-    let slice_bytes: [u8; 30] = slice.to_be_bytes(30).as_array();
+    let slice_bytes: [u8; 30] = slice.to_be_bytes();
     let num_bytes_in_final_chunk = OutputBytes - ((num_chunks - 1) * BYTES_PER_CHUNK);
     for i in 0..num_bytes_in_final_chunk {
         result[(num_chunks - 1) * BYTES_PER_CHUNK + i] = slice_bytes[i];
@@ -152,7 +152,7 @@ pub fn base64_decode<let InputBytes: u32, let OutputElements: u32>(input: [u8; I
             slice += input[i * BYTES_PER_CHUNK + j] as Field;
         }
 
-        let slice_base64_chunks: [u8; 40] = slice.to_be_radix(64, 40).as_array();
+        let slice_base64_chunks: [u8; 40] = slice.to_be_radix(64);
         for j in 0..BASE64_ELEMENTS_PER_CHUNK {
             result[i * BASE64_ELEMENTS_PER_CHUNK + j] = slice_base64_chunks[j];
         }
@@ -170,7 +170,7 @@ pub fn base64_decode<let InputBytes: u32, let OutputElements: u32>(input: [u8; I
     }
 
     // TODO: check is it cheaper to use a constant value in `to_be_bytes` or can we use `bytes_in_final_chunk`?
-    let slice_base64_chunks: [u8; 40] = slice.to_be_radix(64, 40).as_array();
+    let slice_base64_chunks: [u8; 40] = slice.to_be_radix(64);
 
     let num_elements_in_final_chunk = OutputElements - ((num_chunks - 1) * BASE64_ELEMENTS_PER_CHUNK);
     for i in 0..num_elements_in_final_chunk {