diff --git a/pyproject.toml b/pyproject.toml
index 71ecdf1..e151cd6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -99,7 +99,7 @@ lint.isort.known-first-party = [
 lint.isort.required-imports = [
   "from __future__ import annotations",
 ]
-pydocstyle.convention = "google"
+lint.pydocstyle.convention = "google"
 
 [tool.pyproject-fmt]
 max_supported_python = "3.13"
diff --git a/src/humanize/number.py b/src/humanize/number.py
index 19b397e..7bf7c55 100644
--- a/src/humanize/number.py
+++ b/src/humanize/number.py
@@ -424,7 +424,7 @@ def scientific(value: NumberOrString, precision: int = 2) -> str:
             return _format_not_finite(value)
     except (ValueError, TypeError):
         return str(value)
-    fmt = "{:.%se}" % str(int(precision))
+    fmt = f"{{:.{str(int(precision))}e}}"
     n = fmt.format(value)
     part1, part2 = n.split("e")
     # Remove redundant leading '+' or '0's (preserving the last '0' for 10⁰).