diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2dbbfb9..b66e948 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: "v5.0.0"
+    rev: "v6.0.0"
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
@@ -8,18 +8,18 @@ repos:
       - id: check-yaml
 
   - repo: https://github.com/asottile/pyupgrade
-    rev: "v3.20.0"
+    rev: "v3.21.2"
     hooks:
       - id: pyupgrade
         args: [--py310-plus]
 
   - repo: https://github.com/PyCQA/isort
-    rev: "6.0.1"
+    rev: "7.0.0"
     hooks:
       - id: isort
 
-  - repo: https://github.com/psf/black
-    rev: "25.1.0"
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: "26.1.0"
     hooks:
       - id: black
 
@@ -29,6 +29,6 @@ repos:
       - id: flake8
 
   - repo: https://github.com/rbubley/mirrors-prettier
-    rev: "v3.6.2"
+    rev: "v3.8.0"
     hooks:
       - id: prettier
diff --git a/stringcalc/data/daddario-stp.csv b/stringcalc/data/daddario-stp.csv
index 33666e5..abb577a 100644
--- a/stringcalc/data/daddario-stp.csv
+++ b/stringcalc/data/daddario-stp.csv
@@ -71,7 +71,6 @@ X1AGFPP047,0.00045626,0.047,Acoustic Guitar,Phosphor Bronze,FT
 X1AGFPP053,0.00056994,0.053,Acoustic Guitar,Phosphor Bronze,FT
 X1AGFPP056,0.00063151,0.056,Acoustic Guitar,Phosphor Bronze,FT
 J6203,0.00011299,0.024,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
-J4301,2.1383e-05,0.0275,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4304,9.7088e-05,0.028,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4501,2.2167e-05,0.028,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4601,2.2966e-05,0.0285,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
@@ -80,7 +79,6 @@ J4401,2.3779e-05,0.029,"Classical Guitar, Mandolin, Other Instruments, Ukulele",
 J4504,0.00010754,0.029,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J27H04,0.0001118,0.03,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4604,0.0001118,0.03,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
-J4302,2.8413e-05,0.0317,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4502,2.9316e-05,0.0322,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4602,3.0234e-05,0.0327,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4305,0.0001695,0.033,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
@@ -91,7 +89,6 @@ J3005,3.4636e-05,0.035,"Classical Guitar, Mandolin, Other Instruments, Ukulele",
 J4505,0.0001949,0.035,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J27H05,0.00020804,0.036,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4605,0.00020804,0.036,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
-J4303,4.4563e-05,0.0397,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4503,4.592e-05,0.0403,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4603,4.7529e-05,0.041,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J
 J4403,4.8696e-05,0.0415,"Classical Guitar, Mandolin, Other Instruments, Ukulele",Various,J