diff --git a/Meta/CMake/unicode_data.cmake b/Meta/CMake/unicode_data.cmake
index ba43f3dc185..dca7f69fe41 100644
--- a/Meta/CMake/unicode_data.cmake
+++ b/Meta/CMake/unicode_data.cmake
@@ -1,6 +1,6 @@
 include(${CMAKE_CURRENT_LIST_DIR}/utils.cmake)
 
-set(UCD_VERSION 15.0.0)
+set(UCD_VERSION 15.1.0)
 set(UCD_PATH "${SERENITY_CACHE_DIR}/UCD" CACHE PATH "Download location for UCD files")
 set(UCD_VERSION_FILE "${UCD_PATH}/version.txt")
 
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp
index 196410a50b5..36afc1fda1d 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp
@@ -375,7 +375,21 @@ static ErrorOr<void> parse_prop_list(Core::InputBufferedFile& file, PropList& pr
             line = line.substring_view(0, *index);
 
         auto segments = line.split_view(';', SplitBehavior::KeepEmpty);
-        VERIFY(segments.size() == 2);
+        VERIFY(segments.size() == 2 || segments.size() == 3);
+
+        String combined_segment_buffer;
+
+        if (segments.size() == 3) {
+            // For example, in DerivedCoreProperties.txt, there are lines such as:
+            //
+            //     094D          ; InCB; Linker # Mn       DEVANAGARI SIGN VIRAMA
+            //
+            // These are used in text segmentation to prevent breaking within some extended grapheme clusters.
+            // So here, we combine the segments into a single property, which allows us to simply do code point
+            // property lookups at runtime for specific Indic Conjunct Break sequences.
+            combined_segment_buffer = MUST(String::join('_', Array { segments[1].trim_whitespace(), segments[2].trim_whitespace() }));
+            segments[1] = combined_segment_buffer;
+        }
 
         auto code_point_range = parse_code_point_range(segments[0].trim_whitespace());
         Vector<StringView> properties;
diff --git a/Tests/LibUnicode/TestSegmentation.cpp b/Tests/LibUnicode/TestSegmentation.cpp
index 1159ae875b4..675ce060fe7 100644
--- a/Tests/LibUnicode/TestSegmentation.cpp
+++ b/Tests/LibUnicode/TestSegmentation.cpp
@@ -51,6 +51,27 @@ TEST_CASE(grapheme_segmentation)
     test_grapheme_segmentation("a👩🏼‍❤️‍👨🏻b"sv, { 0u, 1u, 29u, 30u });
 }
 
+TEST_CASE(grapheme_segmentation_indic_conjunct_break)
+{
+    test_grapheme_segmentation("\u0915"sv, { 0u, 3u });
+    test_grapheme_segmentation("\u0915a"sv, { 0u, 3u, 4u });
+    test_grapheme_segmentation("\u0915\u0916"sv, { 0u, 3u, 6u });
+
+    test_grapheme_segmentation("\u0915\u094D\u0916"sv, { 0u, 9u });
+
+    test_grapheme_segmentation("\u0915\u09BC\u09CD\u094D\u0916"sv, { 0u, 15u });
+    test_grapheme_segmentation("\u0915\u094D\u09BC\u09CD\u0916"sv, { 0u, 15u });
+
+    test_grapheme_segmentation("\u0915\u09BC\u09CD\u094D\u09BC\u09CD\u0916"sv, { 0u, 21u });
+    test_grapheme_segmentation("\u0915\u09BC\u09CD\u09BC\u09CD\u094D\u0916"sv, { 0u, 21u });
+    test_grapheme_segmentation("\u0915\u094D\u09BC\u09CD\u09BC\u09CD\u0916"sv, { 0u, 21u });
+
+    test_grapheme_segmentation("\u0915\u09BC\u09CD\u09BC\u09CD\u094D\u09BC\u09CD\u0916"sv, { 0u, 27u });
+    test_grapheme_segmentation("\u0915\u09BC\u09CD\u094D\u09BC\u09CD\u09BC\u09CD\u0916"sv, { 0u, 27u });
+
+    test_grapheme_segmentation("\u0915\u09BC\u09CD\u09BC\u09CD\u094D\u09BC\u09CD\u09BC\u09CD\u0916"sv, { 0u, 33u });
+}
+
 template<size_t N>
 static void test_word_segmentation(StringView string, size_t const (&expected_boundaries)[N])
 {
diff --git a/Userland/Libraries/LibUnicode/Segmentation.cpp b/Userland/Libraries/LibUnicode/Segmentation.cpp
index 750f52907ac..74a8dedfb40 100644
--- a/Userland/Libraries/LibUnicode/Segmentation.cpp
+++ b/Userland/Libraries/LibUnicode/Segmentation.cpp
@@ -57,6 +57,22 @@ static void for_each_grapheme_segmentation_boundary_impl([[maybe_unused]] ViewTy
         return (code_point_has_grapheme_break_property(code_point, properties) || ...);
     };
 
+    auto skip_incb_extend_linker_sequence = [&](auto& it) {
+        while (true) {
+            if (it == view.end() || !code_point_has_property(*it, Property::InCB_Extend))
+                return;
+
+            auto next_it = it;
+            ++next_it;
+
+            if (next_it == view.end() || !code_point_has_property(*next_it, Property::InCB_Linker))
+                return;
+
+            it = next_it;
+            ++it;
+        }
+    };
+
     // GB1
     if (callback(0) == IterationDecision::Break)
         return;
@@ -70,6 +86,23 @@ static void for_each_grapheme_segmentation_boundary_impl([[maybe_unused]] ViewTy
         for (++it; it != view.end(); ++it, code_point = next_code_point) {
             next_code_point = *it;
 
+            // GB9c
+            if (code_point_has_property(code_point, Property::InCB_Consonant)) {
+                auto it_copy = it;
+                skip_incb_extend_linker_sequence(it_copy);
+
+                if (it_copy != view.end() && code_point_has_property(*it_copy, Property::InCB_Linker)) {
+                    ++it_copy;
+                    skip_incb_extend_linker_sequence(it_copy);
+
+                    if (it_copy != view.end() && code_point_has_property(*it_copy, Property::InCB_Consonant)) {
+                        next_code_point = *it_copy;
+                        it = it_copy;
+                        continue;
+                    }
+                }
+            }
+
             // GB11
             if (code_point_has_property(code_point, Property::Extended_Pictographic) && has_any_gbp(next_code_point, GBP::Extend, GBP::ZWJ)) {
                 auto it_copy = it;