diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d203bc9..052dedc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,7 @@ jobs:
     strategy:
       matrix:
         build:
+        - assembly
         - bun
         - clang
         - crystal
@@ -61,7 +62,7 @@ jobs:
           curl -fsSL https://crystal-lang.org/install.sh | sudo bash
 
           sudo apt-get update
-          sudo apt-get install -y build-essential cargo clang curl erlang gfortran haskell-platform jq kotlin moreutils nodejs php rustc scala tar wget xz-utils
+          sudo apt-get install -y build-essential cargo clang curl erlang gfortran haskell-platform jq kotlin moreutils nasm nodejs php rustc scala tar wget xz-utils
           cargo install timers
           cargo install hyperfine
           cargo install ripgrep --features 'pcre2'
diff --git a/count.asm b/count.asm
new file mode 100644
index 0000000..2e71c4d
--- /dev/null
+++ b/count.asm
@@ -0,0 +1,25 @@
+section .data
+format db "%d", 10, 0
+
+section .text
+extern printf
+global _start
+
+_start:
+    xor ecx, ecx
+
+start_loop:
+    inc ecx
+    cmp ecx, 1000000000
+    jl start_loop
+
+    ; print
+    mov rdi, format ; rdi: first argument
+    mov esi, ecx    ; esi: second argument
+    xor eax, eax    ; number of vector registers used is 0
+    call printf
+
+    ; exit
+    mov eax, 60  ; system call number for exit
+    xor edi, edi ; exit code 0
+    syscall
diff --git a/justfile b/justfile
index d9fd88c..8b124ce 100644
--- a/justfile
+++ b/justfile
@@ -107,3 +107,8 @@ build-erlang: (_check "erlc erl")
 
 build-crystal: (_check "crystal")
   echo 'crystal run ./count.cr' > CMD
+
+build-assembly: (_check "nasm")
+  nasm -f elf64 count.asm
+  ld count.o -o count -lc -I/lib64/ld-linux-x86-64.so.2
+  echo './count' > CMD