diff --git a/data.yaml b/data.yaml
index 4706928..ecf31c4 100644
--- a/data.yaml
+++ b/data.yaml
@@ -1542,7 +1542,10 @@ library:
     clang:
     - since: C++26
       value: 202411
-    gcc: null
+    gcc:
+    - since: C++26
+      depends: __cpp_lib_assume_aligned && __cpp_lib_is_sufficiently_aligned
+      value: 202411
     msvc: null
 - name: __cpp_lib_allocate_at_least
   header_list: memory
@@ -2776,7 +2779,9 @@ library:
     cppreference-description: Replaceable {{ltt|cpp/utility/is_debugger_present|std::is_debugger_present}}
   support:
     clang: null
-    gcc: null
+    gcc:
+    - since: C++26
+      value: 202403
     msvc: null
 - name: __cpp_lib_deduction_guides
   rows:
@@ -3914,7 +3919,9 @@ library:
     clang:
     - since: C++26
       value: 202411
-    gcc: null
+    gcc:
+    - since: C++26
+      value: 202411
     msvc: null
 - name: __cpp_lib_is_swappable
   header_list: type_traits
@@ -4176,6 +4183,8 @@ library:
     gcc:
     - since: C++23
       value: 202207
+    - since: C++26
+      value: 202406
     msvc:
     - since: C++23
       value: 202207
@@ -5809,7 +5818,8 @@ library:
     clang: null
     gcc:
     - since: C++26
-      depends: __has_builtin(__builtin_type_order) && __cpp_lib_three_way_comparison >= 201907L
+      depends: __has_builtin(__builtin_type_order) && __cpp_lib_three_way_comparison
+        >= 201907L
       value: 202506
     msvc: null
 - name: __cpp_lib_type_trait_variable_templates