diff --git a/libmeminfo/procmeminfo.cpp b/libmeminfo/procmeminfo.cpp
index 347a293..d6332a3 100644
--- a/libmeminfo/procmeminfo.cpp
+++ b/libmeminfo/procmeminfo.cpp
@@ -406,9 +406,10 @@
         return false;
     }
 
-    char line[1024];
+    char* line = nullptr;
+    size_t line_alloc = 0;
     stats->clear();
-    while (fgets(line, sizeof(line), fp.get()) != nullptr) {
+    while (getline(&line, &line_alloc, fp.get()) > 0) {
         switch (line[0]) {
             case 'P':
                 if (strncmp(line, "Pss:", 4) == 0) {
@@ -441,6 +442,8 @@
         }
     }
 
+    // free getline() managed buffer
+    free(line);
     return true;
 }
 
@@ -450,14 +453,17 @@
         return false;
     }
     *pss = 0;
-    char line[1024];
-    while (fgets(line, sizeof(line), fp.get()) != nullptr) {
+    char* line = nullptr;
+    size_t line_alloc = 0;
+    while (getline(&line, &line_alloc, fp.get()) > 0) {
         uint64_t v;
         if (sscanf(line, "Pss: %" SCNu64 " kB", &v) == 1) {
             *pss += v;
         }
     }
 
+    // free getline() managed buffer
+    free(line);
     return true;
 }