diff --git a/README.md b/README.md
index 52b27fa..144eeb2 100644
--- a/README.md
+++ b/README.md
@@ -156,7 +156,8 @@ To error instead, call `p->no_unrecognized()`.
 - [x] `--` to stop parsing options and flags
 - [x] modify `argc`/`argv` (disable with `Parser::no_consume()`)
 - Option/Positional Argument Types
-  - [x] `int`
+  - [x] `int32_t`
+  - [x] `int64_t`
   - [x] `size_t`
   - [x] `float`
   - [x] `double`
diff --git a/include/argparse/argparse.hpp b/include/argparse/argparse.hpp
index a9e616a..89fcf49 100644
--- a/include/argparse/argparse.hpp
+++ b/include/argparse/argparse.hpp
@@ -80,7 +80,10 @@ private:
   void set_val(float *, const std::string &val) { // convert to float
     *val_ = std::stof(val);
   }
-  void set_val(int *, const std::string &val) { // convert to int
+  void set_val(int32_t *, const std::string &val) { // convert to int32_t
+    *val_ = std::stoi(val);
+  }
+  void set_val(int64_t *, const std::string &val) { // convert to int64_t
     *val_ = std::stoi(val);
   }
   void set_val(std::string *, const std::string &val) { // convert to string
@@ -162,7 +165,10 @@ private:
   void set_val(float *, const std::string &val) { // convert to float
     *val_ = std::stof(val);
   }
-  void set_val(int *, const std::string &val) { // convert to int
+  void set_val(int32_t *, const std::string &val) { // convert to int32_t
+    *val_ = std::stoi(val);
+  }
+  void set_val(int64_t *, const std::string &val) { // convert to int64_t
     *val_ = std::stoi(val);
   }
   void set_val(std::string *, const std::string &val) { // convert to string
@@ -248,8 +254,8 @@ public:
         // '--' indicates only positional arguments follow
         // the second '--' should be interpreted as a positional argument
         if (argv[i] == std::string("--")) {
-            optsOkay = false;
-            continue;
+          optsOkay = false;
+          continue;
         }
         OptionBase *opt = match_opt(argv[i]);
         if (opt) {
diff --git a/test/test_argparse.cpp b/test/test_argparse.cpp
index a549bbc..8db1f30 100644
--- a/test/test_argparse.cpp
+++ b/test/test_argparse.cpp
@@ -36,6 +36,7 @@ TEST_CASE("argparse") {
     double d;
     float f;
     int i;
+    int64_t i64;
     std::string s;
     p.add_flag(campi, "--campi");
     p.add_positional(x);
@@ -43,6 +44,7 @@ TEST_CASE("argparse") {
     p.add_positional(f);
     p.add_positional(s);
     p.add_positional(i);
+    p.add_positional(i64);
     REQUIRE(p.parse(argc, argv));
 
     REQUIRE(campi == true);