diff --git a/pyproject.toml b/pyproject.toml
index 19caca4..1fde983 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,12 +21,12 @@ dependencies = [
     "jfjoch-client==1.0.0rc126",
     "rich",
     "pyepics",
-    "pyueye",             # for the IDS uEye camera
+    "pyueye",                    # for the IDS uEye camera
     "bec_widgets",
     "zmq",
     "opencv-python",
-    "dectris-compression", # for JFJ preview stream decompression
-    "cbor2",
+    "dectris-compression",       # for JFJ preview stream decompression
+    "cbor2~=5.9.0",
 ]
 
 [project.optional-dependencies]