diff --git a/devel-docs/libgimpbase/libgimpbase-docs.sgml b/devel-docs/libgimpbase/libgimpbase-docs.sgml
index 759ffabb42..a889d5b812 100644
--- a/devel-docs/libgimpbase/libgimpbase-docs.sgml
+++ b/devel-docs/libgimpbase/libgimpbase-docs.sgml
@@ -43,6 +43,9 @@
   <index role="GIMP 2.6" id="libgimpbase-index-new-in-2-6">
     <title>Index of new symbols in GIMP 2.6</title>
   </index>
+  <index role="GIMP 2.8" id="libgimpbase-index-new-in-2-8">
+    <title>Index of new symbols in GIMP 2.8</title>
+  </index>
   <index role="deprecated" id="libgimpbase-index-deprecated">
     <title>Index of deprecated symbols</title>
   </index>
diff --git a/devel-docs/libgimpcolor/libgimpcolor-docs.sgml b/devel-docs/libgimpcolor/libgimpcolor-docs.sgml
index 8c7c1c71e3..2d582e5a53 100644
--- a/devel-docs/libgimpcolor/libgimpcolor-docs.sgml
+++ b/devel-docs/libgimpcolor/libgimpcolor-docs.sgml
@@ -34,6 +34,9 @@
   <index role="GIMP 2.6" id="libgimpcolor-index-new-in-2-6">
     <title>Index of new symbols in GIMP 2.6</title>
   </index>
+  <index role="GIMP 2.8" id="libgimpcolor-index-new-in-2-8">
+    <title>Index of new symbols in GIMP 2.8</title>
+  </index>
   <index role="deprecated" id="libgimpcolor-index-deprecated">
     <title>Index of deprecated symbols</title>
   </index>
diff --git a/devel-docs/libgimpmodule/libgimpmodule-docs.sgml b/devel-docs/libgimpmodule/libgimpmodule-docs.sgml
index 88fbbda2b7..f8649d1f86 100644
--- a/devel-docs/libgimpmodule/libgimpmodule-docs.sgml
+++ b/devel-docs/libgimpmodule/libgimpmodule-docs.sgml
@@ -29,6 +29,9 @@
   <index role="GIMP 2.6" id="libgimpmodule-index-new-in-2-6">
     <title>Index of new symbols in GIMP 2.6</title>
   </index>
+  <index role="GIMP 2.8" id="libgimpmodule-index-new-in-2-8">
+    <title>Index of new symbols in GIMP 2.8</title>
+  </index>
   <index role="deprecated" id="libgimpmodule-index-deprecated">
     <title>Index of deprecated symbols</title>
   </index>
diff --git a/devel-docs/libgimpwidgets/libgimpwidgets-docs.sgml b/devel-docs/libgimpwidgets/libgimpwidgets-docs.sgml
index 4af09ee75e..1774aad845 100644
--- a/devel-docs/libgimpwidgets/libgimpwidgets-docs.sgml
+++ b/devel-docs/libgimpwidgets/libgimpwidgets-docs.sgml
@@ -115,6 +115,9 @@
   <index role="GIMP 2.6" id="libgimpwidgets-index-new-in-2-6">
     <title>Index of new symbols in GIMP 2.6</title>
   </index>
+  <index role="GIMP 2.8" id="libgimpwidgets-index-new-in-2-8">
+    <title>Index of new symbols in GIMP 2.8</title>
+  </index>
   <index role="deprecated" id="libgimpwidgets-index-deprecated">
     <title>Index of deprecated symbols</title>
   </index>