diff --git a/python/spi.py b/python/spi.py
index 988bcd05..699431bf 100644
--- a/python/spi.py
+++ b/python/spi.py
@@ -17,10 +17,8 @@ from .utils import crc8_pedal
 
 try:
   import spidev
-  import spidev2
 except ImportError:
   spidev = None
-  spidev2 = None
 
 # Constants
 SYNC = 0x5A
@@ -194,6 +192,7 @@ class PandaSpiHandle(BaseHandle):
       return dat[3:-1]
 
   def _transfer_kernel_driver(self, spi, endpoint: int, data, timeout: int, max_rx_len: int = 1000, expect_disconnect: bool = False) -> bytes:
+    import spidev2
     self.tx_buf[:len(data)] = data
     self.ioctl_data.endpoint = endpoint
     self.ioctl_data.tx_length = len(data)
diff --git a/requirements.txt b/requirements.txt
index 41c5226a..23f2cf9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,19 +1,17 @@
 ruff
-libusb1==2.0.1
+libusb1
 numpy
-hexdump>=3.3
-pycryptodome==3.9.8
+hexdump
+pycryptodome
 tqdm>=4.14.0
 pytest
 pytest-mock
 pytest-xdist
 pytest-timeouts
 parameterized
-requests
-cffi==1.14.3
-crcmod
-pre-commit==2.13.0
-scons==4.4.0
+cffi
+pre-commit
+scons>=4.4.0
 flaky
 spidev
 termcolor