diff --git a/History.rst b/History.rst
index 218bbd3..27e3e98 100644
--- a/History.rst
+++ b/History.rst
@@ -1,7 +1,14 @@
 Change Log for SPEC_PLOTS
 =========================
 
-v1.35.0 - 2023 Jul. 31
+v1.35.1 - 2023 Aug. 4  
+-----------------
+* Added support for flux uncertainties being in FLUX_ERROR column
+  instead of ERROR column for JWST x1d FITS files.
+* Fixed readability of y-axis tick labels by adjusting font size,
+  angle, and padding.
+
+v1.35.0 - 2023 Jul. 31 
 -----------------
 * Added required config file for ReadTheDocs.
 * Updated package dependencies to newer versions.
diff --git a/setup.py b/setup.py
index a3308b8..ad358f5 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
 setup(name="spec_plots",
       version=__version__,
       description="Create preview plots of HST or JWST spectra.",
-      classifiers=["Programming Language :: Python :: 3.9"],
+      classifiers=["Programming Language :: Python :: 3"],
       url="https://github.com/spacetelescope/spec_plots",
       author="Scott W. Fleming",
       author_email="fleming@stsci.edu",
diff --git a/spec_plots.egg-info/PKG-INFO b/spec_plots.egg-info/PKG-INFO
index 4d46726..19f4440 100644
--- a/spec_plots.egg-info/PKG-INFO
+++ b/spec_plots.egg-info/PKG-INFO
@@ -1,9 +1,9 @@
 Metadata-Version: 2.1
 Name: spec-plots
-Version: 1.35.0
+Version: 1.35.1
 Summary: Create preview plots of HST or JWST spectra.
 Home-page: https://github.com/spacetelescope/spec_plots
 Author: Scott W. Fleming
 Author-email: fleming@stsci.edu
 License: MIT
-Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3
diff --git a/spec_plots/__init__.py b/spec_plots/__init__.py
index 38f629b..88a153d 100644
--- a/spec_plots/__init__.py
+++ b/spec_plots/__init__.py
@@ -8,4 +8,4 @@
 
 from __future__ import absolute_import
 
-__version__ = '1.35.0'
+__version__ = '1.35.1'
diff --git a/spec_plots/utils/specutils_jwst/plotspec.py b/spec_plots/utils/specutils_jwst/plotspec.py
index 8a11d67..f116e84 100644
--- a/spec_plots/utils/specutils_jwst/plotspec.py
+++ b/spec_plots/utils/specutils_jwst/plotspec.py
@@ -237,7 +237,8 @@ def plotspec(jwst_spectrum, output_type, output_file, flux_scale_factor,
         # Only use two tick labels (min and max wavelengths) for
         # thumbnails, because there isn't enough space otherwise.
         if not is_bigplot:
-            rc('font', size=10)
+            this_plotarea.tick_params(labelsize=6., labelrotation=45.,
+                                          axis='y', pad=0.)
             minwl = numpy.nanmin(all_wls)
             maxwl = numpy.nanmax(all_wls)
             this_plotarea.set_xticks([minwl, maxwl])
@@ -275,7 +276,8 @@ def plotspec(jwst_spectrum, output_type, output_file, flux_scale_factor,
         # Configure the plot units, text size, and other markings based
         # on whether this is a large or thumbnail-sized plot.
         if not is_bigplot:
-            rc('font', size=10)
+            this_plotarea.tick_params(labelsize=6., labelrotation=45.,
+                                          axis='y', pad=0.)
             minwl = numpy.nanmin(all_wls)
             maxwl = numpy.nanmax(all_wls)
             this_plotarea.set_xticks([minwl, maxwl])
diff --git a/spec_plots/utils/specutils_jwst/readspec.py b/spec_plots/utils/specutils_jwst/readspec.py
index 70c099e..2ce4e4f 100644
--- a/spec_plots/utils/specutils_jwst/readspec.py
+++ b/spec_plots/utils/specutils_jwst/readspec.py
@@ -63,9 +63,13 @@ def readspec(input_file):
         try:
             fluxerr_table = jwst_tabledata.field("ERROR")
         except KeyError:
-            print("*** MAKE_JWST_SPEC_PREVIEWS ERROR: ERROR column not found"
-                  " in first extension's binary table.")
-            exit(1)
+            try:
+                fluxerr_table = jwst_tabledata.field("FLUX_ERROR")
+            except KeyError:
+                print("*** MAKE_JWST_SPEC_PREVIEWS ERROR: neither ERROR "
+                          "nor FLUX_ERROR column found in first "
+                          "extension's binary table.")
+                exit(1)
 
         try:
             dq_table = jwst_tabledata.field("DQ")