diff --git a/src/Makefile.am b/src/Makefile.am
index 44d1158..c14e588 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -22,6 +22,9 @@ expression/hklr_op_mod.c \
 expression/hklr_op_not_equal.c \
 expression/hklr_op_equal.c \
 expression/hklr_op_coalesce.c \
+expression/hklr_op_bitwise_or.c \
+expression/hklr_op_bitwise_and.c \
+expression/hklr_op_bitwise_xor.c \
 expression/hklr_as_integer.c \
 expression/hklr_as_real.c \
 expression/hklr_as_string.c \
diff --git a/src/expression/hklr_op_bitwise_and.c b/src/expression/hklr_op_bitwise_and.c
new file mode 100644
index 0000000..fbe7366
--- /dev/null
+++ b/src/expression/hklr_op_bitwise_and.c
@@ -0,0 +1,56 @@
+#include <assert.h>
+
+#include "hkl_value.h"
+
+HklValue* hklr_op_bitwise_and(HklValue* left_value, HklValue* right_value)
+{
+  HklValue* result = NULL;
+  bool left_updated = false, right_updated = false;
+
+  // Dereference left and right sides
+  if (left_value->type == HKL_TYPE_REF)
+  {
+    left_updated = true;
+    left_value = hklr_object_dereference(left_value->as.object);
+  }
+
+  if (right_value->type == HKL_TYPE_REF)
+  {
+    right_updated = true;
+    right_value = hklr_object_dereference(right_value->as.object);
+  }
+
+  switch (left_value->type)
+  {
+    case HKL_TYPE_INT:
+      switch(right_value->type)
+      {
+        case HKL_TYPE_INT:
+          result = hkl_value_new(HKL_TYPE_INT,
+            left_value->as.integer & right_value->as.integer);
+          break;
+
+        case HKL_TYPE_REAL:
+        case HKL_TYPE_STRING:
+        default:
+          assert(false);
+          break;
+      }
+      break; // HKL_TYPE_INT
+    default:
+      assert(false);
+      break;
+  }
+
+  if (left_updated)
+  {
+    hkl_value_free(left_value);
+  }
+
+  if (right_updated)
+  {
+    hkl_value_free(right_value);
+  }
+
+  return result;
+}
\ No newline at end of file
diff --git a/src/expression/hklr_op_bitwise_or.c b/src/expression/hklr_op_bitwise_or.c
new file mode 100644
index 0000000..a2a0622
--- /dev/null
+++ b/src/expression/hklr_op_bitwise_or.c
@@ -0,0 +1,56 @@
+#include <assert.h>
+
+#include "hkl_value.h"
+
+HklValue* hklr_op_bitwise_or(HklValue* left_value, HklValue* right_value)
+{
+  HklValue* result = NULL;
+  bool left_updated = false, right_updated = false;
+
+  // Dereference left and right sides
+  if (left_value->type == HKL_TYPE_REF)
+  {
+    left_updated = true;
+    left_value = hklr_object_dereference(left_value->as.object);
+  }
+
+  if (right_value->type == HKL_TYPE_REF)
+  {
+    right_updated = true;
+    right_value = hklr_object_dereference(right_value->as.object);
+  }
+
+  switch (left_value->type)
+  {
+    case HKL_TYPE_INT:
+      switch(right_value->type)
+      {
+        case HKL_TYPE_INT:
+          result = hkl_value_new(HKL_TYPE_INT,
+            left_value->as.integer | right_value->as.integer);
+          break;
+
+        case HKL_TYPE_REAL:
+        case HKL_TYPE_STRING:
+        default:
+          assert(false);
+          break;
+      }
+      break; // HKL_TYPE_INT
+    default:
+      assert(false);
+      break;
+  }
+
+  if (left_updated)
+  {
+    hkl_value_free(left_value);
+  }
+
+  if (right_updated)
+  {
+    hkl_value_free(right_value);
+  }
+
+  return result;
+}
\ No newline at end of file
diff --git a/src/expression/hklr_op_bitwise_xor.c b/src/expression/hklr_op_bitwise_xor.c
new file mode 100644
index 0000000..17990a3
--- /dev/null
+++ b/src/expression/hklr_op_bitwise_xor.c
@@ -0,0 +1,56 @@
+#include <assert.h>
+
+#include "hkl_value.h"
+
+HklValue* hklr_op_bitwise_xor(HklValue* left_value, HklValue* right_value)
+{
+  HklValue* result = NULL;
+  bool left_updated = false, right_updated = false;
+
+  // Dereference left and right sides
+  if (left_value->type == HKL_TYPE_REF)
+  {
+    left_updated = true;
+    left_value = hklr_object_dereference(left_value->as.object);
+  }
+
+  if (right_value->type == HKL_TYPE_REF)
+  {
+    right_updated = true;
+    right_value = hklr_object_dereference(right_value->as.object);
+  }
+
+  switch (left_value->type)
+  {
+    case HKL_TYPE_INT:
+      switch(right_value->type)
+      {
+        case HKL_TYPE_INT:
+          result = hkl_value_new(HKL_TYPE_INT,
+            left_value->as.integer ^ right_value->as.integer);
+          break;
+
+        case HKL_TYPE_REAL:
+        case HKL_TYPE_STRING:
+        default:
+          assert(false);
+          break;
+      }
+      break; // HKL_TYPE_INT
+    default:
+      assert(false);
+      break;
+  }
+
+  if (left_updated)
+  {
+    hkl_value_free(left_value);
+  }
+
+  if (right_updated)
+  {
+    hkl_value_free(right_value);
+  }
+
+  return result;
+}
\ No newline at end of file
diff --git a/src/hklr_expression.c b/src/hklr_expression.c
index c716b53..d122eb7 100644
--- a/src/hklr_expression.c
+++ b/src/hklr_expression.c
@@ -30,6 +30,11 @@ extern HklValue* hklr_op_not_equal(HklValue* left_value, HklValue* right_value);
 extern HklValue* hklr_op_equal(HklValue* left_value, HklValue* right_value);
 extern HklValue* hklr_op_coalesce(HklValue* left_value, HklValue* right_value);
 
+extern HklValue* hklr_op_bitwise_or(HklValue* left_value, HklValue* right_value);
+extern HklValue* hklr_op_bitwise_and(HklValue* left_value, HklValue* right_value);
+extern HklValue* hklr_op_bitwise_xor(HklValue* left_value, HklValue* right_value);
+
+
 HklrExpression* hklr_expression_new(HklExpressionType type, ...)
 {
   assert(type != HKL_EXPR_NONE);
@@ -372,6 +377,19 @@ HklValue* hklr_expression_eval(HklrExpression* expr)
           return hklr_op_typeof(value);
           break; // HKL_OP_TYPE
 
+        case HKL_OP_BITWISE_NOT:
+          switch (value->type)
+          {
+            case HKL_TYPE_INT:
+              value->as.integer = ~value->as.integer;
+              return value;
+              break;
+
+            default:
+              assert(false);
+              break;
+          }
+
         default:
           assert(false);
           break;
@@ -432,6 +450,18 @@ HklValue* hklr_expression_eval(HklrExpression* expr)
             right_value->type = HKL_TYPE_NIL;
           }
         break;
+
+        case HKL_OP_BITWISE_AND:
+          result = hklr_op_bitwise_and(left_value, right_value);
+          break;
+        case HKL_OP_BITWISE_OR:
+          result = hklr_op_bitwise_or(left_value, right_value);
+          break;
+
+        case HKL_OP_BITWISE_XOR:
+          result = hklr_op_bitwise_xor(left_value, right_value);
+          break;
+
         case HKL_OP_AS:
         {
           assert(right_value->type == HKL_TYPE_TYPE);
diff --git a/src/y.tab.y b/src/y.tab.y
index c21a829..ab52995 100644
--- a/src/y.tab.y
+++ b/src/y.tab.y
@@ -442,6 +442,25 @@ expr:
   {
     $$ = hklr_expression_new(HKL_EXPR_BINARY, $1, HKL_OP_AS, $3);
   }
+
+  | expr HKL_T_BITWISE_AND expr
+  {
+    $$ = hklr_expression_new(HKL_EXPR_BINARY, $1, HKL_OP_BITWISE_AND, $3);
+  }  
+  | expr HKL_T_BITWISE_OR expr
+  {
+    $$ = hklr_expression_new(HKL_EXPR_BINARY, $1, HKL_OP_BITWISE_OR, $3);
+  }
+  | expr HKL_T_BITWISE_XOR expr
+  {
+    $$ = hklr_expression_new(HKL_EXPR_BINARY, $1, HKL_OP_BITWISE_XOR, $3);
+  }
+  | HKL_T_BITWISE_NOT expr %prec UNARY_OPS
+  {
+    $$ = hklr_expression_new(HKL_EXPR_UNARY, HKL_OP_BITWISE_NOT, $2);
+  }
+
+
   | HKL_T_MINUS expr %prec UNARY_OPS
   {
     $$ = hklr_expression_new(HKL_EXPR_UNARY, HKL_OP_UNARY_MINUS, $2);