diff --git a/tox.ini b/tox.ini
index 8effbd5..a4621cb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -28,27 +28,24 @@ commands =
   {[testenv:json-api-ref]commands}
   {[testenv:operation-guide]commands}
   {[testenv:json-operation-guide]commands}
-  {[testenv:operation-guide-lts]commands}
-  {[testenv:json-operation-guide-lts]commands}
   {[testenv:umn]commands}
   {[testenv:json-umn]commands}
 
 [testenv:docs-pdf]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   mkdir
 commands =
   mkdir -p doc/build/pdf
   {[testenv:api-ref-pdf-docs]commands}
   {[testenv:operation-guide-pdf-docs]commands}
-  {[testenv:operation-guide-lts-pdf-docs]commands}
   {[testenv:umn-pdf-docs]commands}
 
 
 # HTML version
 [testenv:api-ref]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   cp
   mkdir
 commands =
@@ -59,7 +56,7 @@ commands =
 # Json version (for search)
 [testenv:json-api-ref]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   cp
   mkdir
   find
@@ -73,7 +70,7 @@ commands =
 # PDF version
 [testenv:api-ref-pdf-docs]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   rm
   mkdir
   make
@@ -92,7 +89,7 @@ commands =
 # HTML version
 [testenv:operation-guide]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   cp
   mkdir
 commands =
@@ -101,7 +98,7 @@ commands =
 # Json version (for search)
 [testenv:json-operation-guide]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   cp
   mkdir
   find
@@ -113,7 +110,7 @@ commands =
 # PDF version
 [testenv:operation-guide-pdf-docs]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   rm
   mkdir
   make
@@ -129,50 +126,10 @@ commands =
   cp doc/component-operation-guide/build/pdf/mrs-component-operation-guide.pdf doc/build/pdf/
 
 
-# HTML version
-[testenv:operation-guide-lts]
-deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
-  cp
-  mkdir
-commands =
-  sphinx-build -W --keep-going -b html doc/component-operation-guide-lts/source doc/build/html/operation-guide-lts
-
-# Json version (for search)
-[testenv:json-operation-guide-lts]
-deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
-  cp
-  mkdir
-  find
-commands =
-  sphinx-build -W --keep-going -b json doc/component-operation-guide-lts/source doc/build/json/operation-guide-lts
-  # Drop data useless for the search
-  find doc/build/json -type d -and ( -name '_images' -or -name '_static' -or -name '_sources' ) -exec rm {:} ;
-
-# PDF version
-[testenv:operation-guide-lts-pdf-docs]
-deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
-  rm
-  mkdir
-  make
-  bash
-  cp
-commands =
-  rm -rf doc/component-operation-guide-lts/build/pdf
-  sphinx-build -W --keep-going -b latex doc/component-operation-guide-lts/source doc/component-operation-guide-lts/build/pdf/
-  bash -c "for f in doc/component-operation-guide-lts/build/pdf/*.gif; do convert $f $\{f/%gif/png\}; done || true"
-  bash -c "for f in doc/component-operation-guide-lts/build/pdf/*.tex; do sed -iorig 's/\.gif//g' $f; done"
-  make -C doc/component-operation-guide-lts/build/pdf
-  mkdir -p doc/build/pdf
-  cp doc/component-operation-guide-lts/build/pdf/mrs-component-operation-guide-lts.pdf doc/build/pdf/
-
-
 # HTML version
 [testenv:umn]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   cp
   mkdir
 commands =
@@ -183,7 +140,7 @@ commands =
 # Json version (for search)
 [testenv:json-umn]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   cp
   mkdir
   find
@@ -197,7 +154,7 @@ commands =
 # PDF version
 [testenv:umn-pdf-docs]
 deps = -r{toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   rm
   mkdir
   make