diff --git a/python/test-requirements.txt b/python/test-requirements.txt
index eb89250..b18f27f 100644
--- a/python/test-requirements.txt
+++ b/python/test-requirements.txt
@@ -1,5 +1,4 @@
 pytest
-hypothesis
 pytest-flake8
 pytest-isort
 pytest-cov
diff --git a/python/tests/account_test.py b/python/tests/account_test.py
index 7ee6d2b..f3b71eb 100644
--- a/python/tests/account_test.py
+++ b/python/tests/account_test.py
@@ -1,8 +1,6 @@
 from builtins import int
 
 import pytest
-from hypothesis import given
-from hypothesis.strategies import text
 
 from olm import Account, OlmAccountError, OlmVerifyError, ed25519_verify
 from olm._compat import to_bytes
@@ -73,8 +71,8 @@ class TestClass(object):
         alice = Account()
         del alice
 
-    @given(text())
-    def test_valid_signature(self, message):
+    def test_valid_signature(self):
+        message = "It's a secret to everybody"
         alice = Account()
 
         signature = alice.sign(message)
@@ -85,8 +83,8 @@ class TestClass(object):
 
         ed25519_verify(signing_key, message, signature)
 
-    @given(text())
-    def test_invalid_signature(self, message):
+    def test_invalid_signature(self):
+        message = "It's a secret to everybody"
         alice = Account()
         bob = Account()
 
@@ -99,8 +97,8 @@ class TestClass(object):
         with pytest.raises(OlmVerifyError):
             ed25519_verify(signing_key, message, signature)
 
-    @given(text())
-    def test_signature_verification_twice(self, message):
+    def test_signature_verification_twice(self):
+        message = "It's a secret to everybody"
         alice = Account()
 
         signature = alice.sign(message)
diff --git a/python/tests/utils_test.py b/python/tests/utils_test.py
index a552d12..9d22157 100644
--- a/python/tests/utils_test.py
+++ b/python/tests/utils_test.py
@@ -2,16 +2,16 @@ import base64
 import hashlib
 
 from future.utils import bytes_to_native_str
-from hypothesis import given
-from hypothesis.strategies import text
 
 from olm import sha256
 from olm._compat import to_bytes
 
 
 class TestClass(object):
-    @given(text(), text())
-    def test_sha256(self, input1, input2):
+    def test_sha256(self):
+        input1 = "It's a secret to everybody"
+        input2 = "It's a secret to nobody"
+
         first_hash = sha256(input1)
         second_hash = sha256(input2)