diff --git a/easybuild/easyconfigs/t/tensorboard/tensorboard-2.15.1-gfbf-2023a.eb b/easybuild/easyconfigs/t/tensorboard/tensorboard-2.15.1-gfbf-2023a.eb
index dd45e0d7f73d..9c74e1a8f87d 100644
--- a/easybuild/easyconfigs/t/tensorboard/tensorboard-2.15.1-gfbf-2023a.eb
+++ b/easybuild/easyconfigs/t/tensorboard/tensorboard-2.15.1-gfbf-2023a.eb
@@ -20,9 +20,9 @@ dependencies = [
 ]
 
 exts_list = [
-    ('absl-py', '2.0.0', {
+    ('absl-py', '2.1.0', {
         'modulename': 'absl',
-        'checksums': ['d9690211c5fcfefcdd1a45470ac2b5c5acd45241c3af71eed96bc5441746c0d5'],
+        'checksums': ['7820790efbb316739cde8b4e19357243fc3608a152024288513dd968d7d959ff'],
     }),
     ('cachetools', '5.3.2', {
         'checksums': ['086ee420196f7b2ab9ca2db2520aca326318b68fe5ba8bc4d49cca91add450f2'],
@@ -33,9 +33,9 @@ exts_list = [
     ('rsa', '4.9', {
         'checksums': ['e38464a49c6c85d7f1351b0126661487a7e0a14a50f1675ec50eb34d4f20ef21'],
     }),
-    ('google-auth', '2.26.0', {
+    ('google-auth', '2.26.2', {
         'modulename': 'google.auth',
-        'checksums': ['5d8bf0a5143baa45368c3d08bf157babda468db1c5dd987cd2c824b788524196'],
+        'checksums': ['97327dbbf58cccb58fc5a1712bba403ae76668e64814eb30f7316f7e27126b81'],
     }),
     ('oauthlib', '3.2.2', {
         'checksums': ['9859c40929662bec5d64f34d01c99e093149682a3f38915dc0655d5a633dd918'],
@@ -51,8 +51,8 @@ exts_list = [
         'preinstallopts': "export GRPC_PYTHON_BUILD_EXT_COMPILER_JOBS=%(parallel)s && ",
         'checksums': ['2199165a1affb666aa24adf0c97436686d0a61bc5fc113c037701fb7c7fceb96'],
     }),
-    ('Markdown', '3.5.1', {
-        'checksums': ['b65d7beb248dc22f2e8a31fb706d93798093c308dc1aba295aedeb9d41a813bd'],
+    ('Markdown', '3.5.2', {
+        'checksums': ['e1ac7b3dc550ee80e602e71c1d168002f062e49f1b11e26a36264dafd4df2ef8'],
     }),
     ('tensorboard_data_server', '0.7.2', {
         'source_tmpl': '%(name)s-%(version)s-py3-none-any.whl',
@@ -74,6 +74,7 @@ exts_list = [
 
 #  Relax restriction on protobuf dependency as issue was fixed
 #  in https://github.com/protocolbuffers/upb/pull/1514
+#  see also: https://github.com/easybuilders/easybuild-easyconfigs/pull/19671
 postinstallcmds = [
     'sed -i "s/Requires-Dist: protobuf.*/Requires-Dist: protobuf >=3.19.6/g" ' +
     '%(installdir)s/lib/python%(pyshortver)s/site-packages/%(name)s-%(version)s.dist-info/METADATA',