diff --git a/src/libime/pinyin/pinyinprediction.cpp b/src/libime/pinyin/pinyinprediction.cpp
index 695dda4..a1b5f96 100644
--- a/src/libime/pinyin/pinyinprediction.cpp
+++ b/src/libime/pinyin/pinyinprediction.cpp
@@ -104,7 +104,7 @@ PinyinPrediction::predict(const State &state,
         [this, &sentence, &prevState, &cmp, &intermedidateResult, &dup,
          maxSize](std::string_view, std::string_view hz, float cost) {
             if (sentence.back().size() < hz.size() &&
-                fcitx::stringutils::startsWith(hz, sentence.back())) {
+                hz.starts_with(sentence.back())) {
 
                 std::string newWord(hz.substr(sentence.back().size()));
                 if (dup.contains(newWord)) {
diff --git a/src/libime/table/tablebaseddictionary.cpp b/src/libime/table/tablebaseddictionary.cpp
index 493a4d4..82850fd 100644
--- a/src/libime/table/tablebaseddictionary.cpp
+++ b/src/libime/table/tablebaseddictionary.cpp
@@ -101,8 +101,7 @@ inline std::string generateTableEntry(uint32_t pinyinKey, std::string_view key,
 }
 
 void maybeUnescapeValue(std::string &value) {
-    if (value.size() >= 2 && fcitx::stringutils::startsWith(value, '"') &&
-        fcitx::stringutils::endsWith(value, '"')) {
+    if (value.size() >= 2 && value.starts_with('"') && value.ends_with('"')) {
         if (auto unescape = fcitx::stringutils::unescapeForValue(value)) {
             value = unescape.value();
         }
@@ -112,8 +111,7 @@ void maybeUnescapeValue(std::string &value) {
 std::string maybeEscapeValue(std::string_view value) {
     auto escaped = fcitx::stringutils::escapeForValue(value);
     if (escaped.size() != value.size()) {
-        if (fcitx::stringutils::startsWith(escaped, "\"") &&
-            fcitx::stringutils::endsWith(escaped, "\"")) {
+        if (escaped.starts_with("\"") && escaped.ends_with("\"")) {
             return escaped;
         }
         return fcitx::stringutils::concat("\"", escaped, "\"");
@@ -673,7 +671,7 @@ void TableBasedDictionary::loadText(std::istream &in) {
 
         switch (phase) {
         case BuildPhase::PhaseConfig: {
-            if (fcitx::stringutils::startsWith(line, "#")) {
+            if (line.starts_with("#")) {
                 continue;
             }
 
@@ -716,7 +714,7 @@ void TableBasedDictionary::loadText(std::istream &in) {
             break;
         }
         case BuildPhase::PhaseRule: {
-            if (fcitx::stringutils::startsWith(line, "#")) {
+            if (line.starts_with("#")) {
                 continue;
             }
             if (consumeOptionPrefix(line, STR_DATA)) {
diff --git a/tools/libime_migrate_fcitx4_table.cpp b/tools/libime_migrate_fcitx4_table.cpp
index 0f9f3c4..0ff0922 100644
--- a/tools/libime_migrate_fcitx4_table.cpp
+++ b/tools/libime_migrate_fcitx4_table.cpp
@@ -148,7 +148,7 @@ std::optional<std::string> replaceSuffix(const std::string &input,
                                          const std::string &suffix,
                                          std::string_view newSuffix) {
     auto name = fs::baseName(input);
-    if (!stringutils::endsWith(name, suffix)) {
+    if (!name.ends_with(suffix)) {
         return {};
     }
     // Strip .mb