diff --git a/gwsumm/plot/triggers/core.py b/gwsumm/plot/triggers/core.py
index 025b500f..30d66d0f 100644
--- a/gwsumm/plot/triggers/core.py
+++ b/gwsumm/plot/triggers/core.py
@@ -296,7 +296,7 @@ def add_loudest_event(self, ax, table, rank, *columns, **kwargs):
             colstr = get_column_string(col)
             # format row value
             try:
-                valstr = f"{row[col]:.2f}".rstrip('.0')
+                valstr = f"{row[col]:.2f}".removesuffix('.00')
             except ValueError:  # not float()able
                 valstr = str(row[col])
             txt.append(f'{colstr} = {valstr}')
diff --git a/pyproject.toml b/pyproject.toml
index 57fe73da..63e68827 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ dependencies = [
   "astropy >=3.0.0",
   "gwdatafind >=1.1.1",
   "gwdetchar >=2.2.6",
-  "gwpy >=2.0.0",
+  "gwpy >=2.0.0, <=3.0.8",
   "gwtrigfind",
   "lalsuite",
   "ligo-segments",
@@ -53,7 +53,7 @@ dependencies = [
   "pygments >=2.7.0",
   "python-dateutil",
   "python-ligo-lw",
-  "scipy >=1.2.0",
+  "scipy >=1.2.0, <1.14",
 ]
 
 dynamic = ["version"]