diff --git a/docs/source/classical_coding.ipynb b/docs/source/classical_coding.ipynb
index ef189ff..81690a4 100644
--- a/docs/source/classical_coding.ipynb
+++ b/docs/source/classical_coding.ipynb
@@ -11,7 +11,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 34,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [
     {
@@ -32,6 +32,7 @@
    "source": [
     "import numpy as np\n",
     "import ldpc.codes\n",
+    "import ldpc.code_util\n",
     "n=5 #specifies the lenght of the repetition code\n",
     "H=ldpc.codes.rep_code(n) #returns the repetition code parity check matrix\n",
     "print(H)"
@@ -46,7 +47,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 35,
+   "execution_count": 7,
    "metadata": {},
    "outputs": [
     {
@@ -74,7 +75,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 36,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [
     {
@@ -103,7 +104,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 37,
+   "execution_count": 9,
    "metadata": {},
    "outputs": [
     {
@@ -130,7 +131,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [
     {
@@ -157,14 +158,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Code distance estimate, d <= 3 (no. codewords sampled: 394837)\n"
+      "Code distance estimate, d <= 3 (no. codewords sampled: 390178)\n"
      ]
     }
    ],
@@ -182,7 +183,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [
     {
@@ -209,7 +210,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 38,
+   "execution_count": 13,
    "metadata": {},
    "outputs": [
     {
@@ -248,7 +249,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 39,
+   "execution_count": 14,
    "metadata": {},
    "outputs": [
     {
@@ -260,7 +261,7 @@
        "       [0, 0, 1, 1, 0, 0, 1]], dtype=uint8)"
       ]
      },
-     "execution_count": 39,
+     "execution_count": 14,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -284,7 +285,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 40,
+   "execution_count": 15,
    "metadata": {},
    "outputs": [
     {
@@ -295,7 +296,7 @@
        "       [0, 0, 0, 0]], dtype=uint8)"
       ]
      },
-     "execution_count": 40,
+     "execution_count": 15,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -324,7 +325,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 41,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [
     {
@@ -333,7 +334,7 @@
        "array([1, 0, 0, 0, 0, 1, 1])"
       ]
      },
-     "execution_count": 41,
+     "execution_count": 16,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -354,7 +355,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 42,
+   "execution_count": 17,
    "metadata": {},
    "outputs": [
     {
@@ -363,7 +364,7 @@
        "array([0, 0, 0])"
       ]
      },
-     "execution_count": 42,
+     "execution_count": 17,
      "metadata": {},
      "output_type": "execute_result"
     }
diff --git a/setup.py b/setup.py
index 91bce73..7cd8fd3 100755
--- a/setup.py
+++ b/setup.py
@@ -92,9 +92,14 @@ def generate_cython_stub_file(pyx_filepath: str, output_filepath: str) -> None:
 ## BUILD
 
 
+# if sys.platform == "darwin":
+#     os.environ["CC"] = "gcc-11"
+#     os.environ["CXX"] = "g++-11"
+
 if sys.platform == "darwin":
-    os.environ["CC"] = "gcc-11"
-    os.environ["CXX"] = "g++-11"
+    os.environ["CC"] = "clang"
+    os.environ["CXX"] = "clang++"
+
 
 if sys.platform == "win32":
     compile_flags = ["/Ox", "/std:c++20"]