diff --git a/core/sappyou.c b/core/sappyou.c
index 4c60896..4048a81 100644
--- a/core/sappyou.c
+++ b/core/sappyou.c
@@ -168,3 +168,22 @@ int tanzaku_rem(Sappyou *sappyou, uint64_t tanzaku_id) {
     sappyou->modified_ts = time(NULL);
     return 0;
 }
+
+int tanzaku_upd(Sappyou *sappyou, uint64_t tanzaku_id, const char *name, const char *description) {
+    if (tanzaku_id == HOLE_ID || tanzaku_id >= sappyou->size) {
+        return 1;
+    }
+    _Bool changed = 0;
+    if (name != NULL) {
+        strcpy(sappyou->database[tanzaku_id].name, name);
+        changed = 1;
+    }
+    if (description != NULL) {
+        strcpy(sappyou->database[tanzaku_id].description, description);
+        changed = 1;
+    }
+    if (changed) {
+        sappyou->modified_ts = time(NULL);
+    }
+    return 0;
+}
diff --git a/core/sasahyou.c b/core/sasahyou.c
index 13f956f..4f1fb8b 100644
--- a/core/sasahyou.c
+++ b/core/sasahyou.c
@@ -163,3 +163,14 @@ int sasa_rem(Sasahyou *sasahyou, uint64_t sasa_id) {
     sasahyou->modified_ts = time(NULL);
     return 0;
 }
+
+int sasa_upd(Sasahyou *sasahyou, uint64_t sasa_id, const char *path) {
+    if (sasa_id == HOLE_ID || sasa_id >= sasahyou->size) {
+        return 1;
+    }
+    if (path != NULL) {
+        strcpy(sasahyou->database[sasa_id].path, path);
+        sasahyou->modified_ts = time(NULL);
+    }
+    return 0;
+}
diff --git a/include/core.h b/include/core.h
index f3e833b..4006d26 100644
--- a/include/core.h
+++ b/include/core.h
@@ -111,6 +111,9 @@ int sasa_add(Sasahyou *sasahyou, const char *path);
 // Remove sasa from sasahyou
 int sasa_rem(Sasahyou *sasahyou, uint64_t sasa_id);
 
+// Update sasa file path
+int sasa_upd(Sasahyou *sasahyou, uint64_t sasa_id, const char *path);
+
 // ==================== SAPPYOU SECTION ==================== //
 
 // Initialize empty sappyou
@@ -137,6 +140,9 @@ int tanzaku_add(Sappyou *sappyou, const char *name, const char *description);
 // Remove tanzaku from sappyou
 int tanzaku_rem(Sappyou *sappyou, uint64_t tanzaku_id);
 
+// Update tanzaku name and description
+int tanzaku_upd(Sappyou *sappyou, uint64_t tanzaku_id, const char *name, const char *description);
+
 // ==================== SHOPPYOU SECTION ==================== //
 
 // Initialize empty shoppyou