diff --git a/dashtable/html2data/extract_spans.py b/dashtable/html2data/extract_spans.py
index 06df757..2594156 100755
--- a/dashtable/html2data/extract_spans.py
+++ b/dashtable/html2data/extract_spans.py
@@ -28,7 +28,7 @@ def extract_spans(html_string: str) -> Optional[DATA_SPANS]:
     if not table:
         return []
 
-    trs = table.findAll('tr')
+    trs = table.find_all('tr')
     if len(trs) == 0:
         return []
 
@@ -37,12 +37,12 @@ def extract_spans(html_string: str) -> Optional[DATA_SPANS]:
 
     for tr in range(len(trs)):
         if tr == 0:
-            ths = trs[tr].findAll('th')
+            ths = trs[tr].find_all('th')
             if len(ths) == 0:
-                ths = trs[tr].findAll('td')
+                ths = trs[tr].find_all('td')
             tds = ths
         else:
-            tds = trs[tr].findAll('td')
+            tds = trs[tr].find_all('td')
 
         if spans_arr is None:
             column = 0
diff --git a/dashtable/html2data/extract_table.py b/dashtable/html2data/extract_table.py
index 67607e0..7ffcde0 100755
--- a/dashtable/html2data/extract_table.py
+++ b/dashtable/html2data/extract_table.py
@@ -37,14 +37,14 @@ def extract_table(html_string, row_count, column_count):
     if not table:
         return ''
 
-    trs = table.findAll('tr')
+    trs = table.find_all('tr')
     if len(trs) == 0:
         return [['']]
 
     for tr in range(len(trs)):
-        ths = trs[tr].findAll('th')
+        ths = trs[tr].find_all('th')
         if len(ths) == 0:
-            tds = trs[tr].findAll('td')
+            tds = trs[tr].find_all('td')
         else:
             tds = ths
 
diff --git a/dashtable/html2data/get_html_column_count.py b/dashtable/html2data/get_html_column_count.py
index f5e7160..5c33df5 100755
--- a/dashtable/html2data/get_html_column_count.py
+++ b/dashtable/html2data/get_html_column_count.py
@@ -23,17 +23,17 @@ def get_html_column_count(html_string):
         return 0
 
     column_counts = []
-    trs = table.findAll('tr')
+    trs = table.find_all('tr')
     if len(trs) == 0:
         return 0
 
     for tr in range(len(trs)):
         if tr == 0:
-            tds = trs[tr].findAll('th')
+            tds = trs[tr].find_all('th')
             if len(tds) == 0:
-                tds = trs[tr].findAll('td')
+                tds = trs[tr].find_all('td')
         else:
-            tds = trs[tr].findAll('td')
+            tds = trs[tr].find_all('td')
 
         count = 0
         for td in tds:
diff --git a/dashtable/html2data/headers_present.py b/dashtable/html2data/headers_present.py
index 0aa5902..7fde203 100755
--- a/dashtable/html2data/headers_present.py
+++ b/dashtable/html2data/headers_present.py
@@ -21,7 +21,7 @@ def headers_present(html_string):
     if not table:
         return False
 
-    th = table.findAll('th')
+    th = table.find_all('th')
     if len(th) > 0:
         return True
     else:
diff --git a/requirements.txt b/requirements.txt
index 3c0a475..4fdb197 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 
-bs4
+beautifulsoup4
 docutils
 numpy
 typing_extensions