diff --git a/publicdb/raw_data/views.py b/publicdb/raw_data/views.py
index 8895e7c9..ed8d3246 100644
--- a/publicdb/raw_data/views.py
+++ b/publicdb/raw_data/views.py
@@ -770,9 +770,8 @@ def clean_float_array(numbers, precision=5):
                       to support -999.
 
     """
-    if precision < 3:
-        # Unable to preserve -999 if precision less than 3.
-        precision = 3
+    # Unable to preserve -999 if precision less than 3.
+    precision = max(precision, 3)
     return char.mod(f'%.{precision}g', numbers)
 
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index d22e4ba8..07305d1a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,5 @@
 # lint & format
-ruff==0.5.7
+ruff==0.6.2
 
 # spelling
 typos==1.24.1