diff --git a/.travis.yml b/.travis.yml
index 8f32b37..c722707 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,9 @@ matrix:
     - python: 3.7
       dist: xenial
       sudo: true
+    - python: 3.8
+      dist: xenial
+      sudo: true
 
 env:
   - SKIP_DEPS_CHECK=1
diff --git a/boa/code/method.py b/boa/code/method.py
index 7171d40..10e0dd6 100644
--- a/boa/code/method.py
+++ b/boa/code/method.py
@@ -103,11 +103,12 @@ def args(self):
     def stacksize(self):
         return self.bytecode.argcount + len(self._blocks) + 2
 
-    def __init__(self, module, block, module_name, extra):
+    def __init__(self, module, block, module_name, extra, related_blocks=None):
         self.module = module
         self.block = block
         self.module_name = module_name
         self._extra = extra
+        self._related_blocks = related_blocks
 
         method_block_index = self.get_code_block_index(self.block)
         if method_block_index is None:
@@ -182,37 +183,45 @@ def setup(self):
         self._expressions = []
 
     def evaluate_annotations(self, index):
+        if self._related_blocks:
+            blocks = []
+            for block in self._related_blocks:
+                blocks.extend(block)
+            index = len(blocks)
+        else:
+            blocks = self.block
+
         block_index = 0
         args_types = []
         while block_index < index:
-            if self.block[block_index].opcode == pyop.LOAD_NAME and 'abi' in self.block[block_index].arg:
-                block_index = self.include_abi_info(block_index)
+            if blocks[block_index].opcode == pyop.LOAD_NAME and 'abi' in blocks[block_index].arg:
+                block_index = self.include_abi_info(blocks, block_index)
             else:
                 block_index = block_index + 1
 
-    def include_abi_info(self, start_index):
+    def include_abi_info(self, block, start_index):
         index = start_index
-        load_method_instr = self.block[index]
+        load_method_instr = block[index]
 
         while load_method_instr.opcode != pyop.LOAD_METHOD and load_method_instr.opcode != pyop.LOAD_NAME:
             index = index + 1
-            load_method_instr = self.block[index]
+            load_method_instr = block[index]
 
         args_types = []
         if load_method_instr.arg == 'abi_method' or load_method_instr.arg == 'abi_entry_point':
             index = index + 1
-            arg_instr = self.block[index]
+            arg_instr = block[index]
             while arg_instr.opcode == pyop.LOAD_NAME or arg_instr.opcode == pyop.LOAD_ATTR:
                 if abi.is_abi_type(arg_instr.arg):
                     args_types.append(arg_instr.arg)
                 index = index + 1
-                arg_instr = self.block[index]
+                arg_instr = block[index]
 
             # return type not specified
             if len(args_types) == len(self.args):
                 args_types.append(abi.Void)
 
-            if arg_instr.opcode == pyop.CALL_METHOD:
+            if arg_instr.opcode in [pyop.CALL_METHOD, pyop.CALL_FUNCTION]:
                 index = index + 1
 
             if load_method_instr.arg == 'abi_entry_point':
diff --git a/boa/code/module.py b/boa/code/module.py
index 45fdce1..ad5b994 100644
--- a/boa/code/module.py
+++ b/boa/code/module.py
@@ -201,12 +201,30 @@ def build(self):
             elif type == BlockType.APPCALL_REG:
                 self.app_call_registrations.append(BoaAppcall(blk))
 
+        last_m = None
         for m in new_method_blks:
 
-            new_method = BoaMethod(self, m, self.module_name, self._extra_instr)
+            new_method = BoaMethod(self, m, self.module_name, self._extra_instr, self._method_related_blocks(m, last_m))
 
             if not self.has_method(new_method.full_name):
                 self.methods.append(new_method)
+            last_m = m
+
+    def _method_related_blocks(self, method_block, last_method_block):
+        # decorators were included in the same block as the method until python 3.7
+        # in python 3.8, they're in different blocks, that are in the `_extra_instr`
+        if sys.version_info >= (3, 8):
+            block = method_block
+            if last_method_block:
+                block = last_method_block.next_block
+            elif len(self._extra_instr) > 0:
+                block = self._extra_instr[0]
+
+            extra_instr = []
+            while block is not None and block is not method_block:
+                extra_instr.append(block)
+                block = block.next_block
+            return extra_instr
 
     def write(self):
         """
@@ -375,19 +393,20 @@ def to_s(self):
         return "\n".join(output)
 
     def include_abi_method(self, method, types):
-        num_methods = len(method.args)
-        num_types = len(types)
-
-        args_types = {}
-        # params and return types
-        if num_types == num_methods + 1:
-            for index, arg in enumerate(method.args):
-                args_types[arg] = types[index]
-            args_types['return'] = types[num_types - 1]
-        else:
-            raise Exception("Number of arguments for the abi is incompatible with the function '%s'" % method.full_name)
-
-        self.abi_methods[method.full_name] = args_types
+        if method.full_name not in self.abi_methods:
+            num_methods = len(method.args)
+            num_types = len(types)
+
+            args_types = {}
+            # params and return types
+            if num_types == num_methods + 1:
+                for index, arg in enumerate(method.args):
+                    args_types[arg] = types[index]
+                args_types['return'] = types[num_types - 1]
+            else:
+                raise Exception("Number of arguments for the abi is incompatible with the function '%s'" % method.full_name)
+
+            self.abi_methods[method.full_name] = args_types
 
     def set_abi_entry_point(self, method, types):
         if self.abi_entry_point is None: