diff --git a/theHarvester/discovery/threatcrowd.py b/theHarvester/discovery/threatcrowd.py
index 2b396c4e..cbdbcda3 100644
--- a/theHarvester/discovery/threatcrowd.py
+++ b/theHarvester/discovery/threatcrowd.py
@@ -1,3 +1,4 @@
+from typing import Coroutine
 from theHarvester.lib.core import *
 from theHarvester.parsers import myparser
 
@@ -19,7 +20,7 @@ async def do_search(self):
             print(e)
         self.totalresults += self.results
 
-    async def get_hostnames(self) -> set:
+    async def get_hostnames(self) -> Coroutine:
         return myparser.Parser(self.results, self.word).hostnames()
 
     async def process(self):
diff --git a/theHarvester/discovery/twittersearch.py b/theHarvester/discovery/twittersearch.py
index e4a04e7b..0c18e790 100644
--- a/theHarvester/discovery/twittersearch.py
+++ b/theHarvester/discovery/twittersearch.py
@@ -14,21 +14,21 @@ def __init__(self, word, limit):
         self.limit = int(limit)
         self.counter = 0
 
-    def do_search(self):
+    async def do_search(self):
         base_url = f'https://{self.server}/search?num=100&start=xx&hl=en&meta=&q=site%3Atwitter.com%20intitle%3A%22on+Twitter%22%20{self.word}'
         headers = {'User-Agent': Core.get_user_agent()}
         try:
             urls = [base_url.replace("xx", str(num)) for num in range(0, self.limit, 10) if num <= self.limit]
-            request = (grequests.get(url, headers=headers) for url in urls)
-            response = grequests.imap(request, size=5)
+            request = (await AsyncFetcher.fetch_all([base_url], headers=headers) for url in urls)
+            response = request
             for entry in response:
-                self.totalresults += entry.content.decode('UTF-8')
+                self.totalresults += entry
         except Exception as error:
             print(error)
 
-    def get_people(self):
+    async def get_people(self):
         rawres = myparser.Parser(self.totalresults, self.word)
-        to_parse = rawres.people_twitter()
+        to_parse = await rawres.people_twitter()
         # fix invalid handles that look like @user other_output
         handles = set()
         for handle in to_parse:
@@ -37,5 +37,5 @@ def get_people(self):
                 handles.add(result.group(0))
         return handles
 
-    def process(self):
-        self.do_search()
+    async def process(self):
+        await self.do_search()
diff --git a/theHarvester/parsers/myparser.py b/theHarvester/parsers/myparser.py
index 16a74865..63feb6ba 100644
--- a/theHarvester/parsers/myparser.py
+++ b/theHarvester/parsers/myparser.py
@@ -8,7 +8,7 @@ def __init__(self, results, word):
         self.word = word
         self.temp = []
 
-    def genericClean(self):
+    async def genericClean(self):
         self.results = self.results.replace('<em>', '').replace('<b>', '').replace('</b>', '').replace('</em>', '')\
             .replace('%2f', '').replace('%3a', '').replace('<strong>', '').replace('</strong>', '')\
             .replace('<wbr>', '').replace('</wbr>', '')
@@ -16,13 +16,13 @@ def genericClean(self):
         for search in ('<', '>', ':', '=', ';', '&', '%3A', '%3D', '%3C', '/', '\\'):
             self.results = self.results.replace(search, ' ')
 
-    def urlClean(self):
+    async def urlClean(self):
         self.results = self.results.replace('<em>', '').replace('</em>', '').replace('%2f', '').replace('%3a', '')
         for search in ('<', '>', ':', '=', ';', '&', '%3A', '%3D', '%3C'):
             self.results = self.results.replace(search, ' ')
 
-    def emails(self):
-        self.genericClean()
+    async def emails(self):
+        await self.genericClean()
         # Local part is required, charset is flexible.
         # https://tools.ietf.org/html/rfc6531 (removed * and () as they provide FP mostly)
         reg_emails = re.compile(r'[a-zA-Z0-9.\-_+#~!$&\',;=:]+' + '@' + '[a-zA-Z0-9.-]*' + self.word.replace('www.', ''))
@@ -33,7 +33,7 @@ def emails(self):
         # if email starts with dot shift email string and make sure all emails are lowercase
         return true_emails
 
-    def fileurls(self, file):
+    async def fileurls(self, file):
         urls = []
         reg_urls = re.compile('<a href="(.*?)"')
         self.temp = reg_urls.findall(self.results)
@@ -45,8 +45,8 @@ def fileurls(self, file):
                 urls.append(iteration)
         return urls
 
-    def hostnames(self):
-        self.genericClean()
+    async def hostnames(self):
+        await self.genericClean()
         reg_hosts = re.compile(r'[a-zA-Z0-9.-]*\.' + self.word)
         self.temp = reg_hosts.findall(self.results)
         hostnames = self.unique()
@@ -55,7 +55,7 @@ def hostnames(self):
         hostnames.extend(self.unique())
         return list(set(hostnames))
 
-    def people_googleplus(self):
+    async def people_googleplus(self):
         self.results = re.sub('</b>', '', self.results)
         self.results = re.sub('<b>', '', self.results)
         reg_people = re.compile(r'>[a-zA-Z0-9._ ]* - Google\+')
@@ -71,7 +71,7 @@ def people_googleplus(self):
                 resul.append(delete)
         return resul
 
-    def hostnames_all(self):
+    async def hostnames_all(self):
         reg_hosts = re.compile('<cite>(.*?)</cite>')
         temp = reg_hosts.findall(self.results)
         for iteration in temp:
@@ -83,7 +83,7 @@ def hostnames_all(self):
         hostnames = self.unique()
         return hostnames
 
-    def links_linkedin(self):
+    async def links_linkedin(self):
         reg_links = re.compile(r"url=https:\/\/www\.linkedin.com(.*?)&")
         self.temp = reg_links.findall(self.results)
         resul = []
@@ -92,7 +92,7 @@ def links_linkedin(self):
             resul.append("https://www.linkedin.com" + final_url)
         return resul
 
-    def people_linkedin(self):
+    async def people_linkedin(self):
         reg_people = re.compile(r'">[a-zA-Z0-9._ -]* \| LinkedIn')
         self.temp = reg_people.findall(self.results)
         resul = []
@@ -106,7 +106,7 @@ def people_linkedin(self):
                 resul.append(delete)
         return resul
 
-    def people_twitter(self):
+    async def people_twitter(self):
         reg_people = re.compile(r'(@[a-zA-Z0-9._ -]*)')
         self.temp = reg_people.findall(self.results)
         users = self.unique()
@@ -121,7 +121,7 @@ def people_twitter(self):
                 resul.append(delete)
         return resul
 
-    def profiles(self):
+    async def profiles(self):
         reg_people = re.compile(r'">[a-zA-Z0-9._ -]* - <em>Google Profile</em>')
         self.temp = reg_people.findall(self.results)
         resul = []
@@ -133,7 +133,7 @@ def profiles(self):
                 resul.append(delete)
         return resul
 
-    def set(self):
+    async def set(self):
         reg_sets = re.compile(r'>[a-zA-Z0-9]*</a></font>')
         self.temp = reg_sets.findall(self.results)
         sets = []
@@ -143,10 +143,10 @@ def set(self):
             sets.append(delete)
         return sets
 
-    def urls(self):
+    async def urls(self):
         found = re.finditer(r'(http|https)://(www\.)?trello.com/([a-zA-Z0-9\-_\.]+/?)*', self.results)
         urls = {match.group().strip() for match in found}
         return urls
 
-    def unique(self) -> list:
+    async def unique(self) -> list:
         return list(set(self.temp))