diff --git a/pygmt/__init__.py b/pygmt/__init__.py
index 162d688e7a3..fc1981eebef 100644
--- a/pygmt/__init__.py
+++ b/pygmt/__init__.py
@@ -146,17 +146,6 @@ def _get_ghostscript_version():
                 continue
         return None
 
-    def _get_gmt_version():
-        """
-        Get GMT version.
-        """
-        try:
-            return subprocess.check_output(
-                ["gmt", "--version"], universal_newlines=True
-            ).strip()
-        except FileNotFoundError:
-            return None
-
     sys_info = {
         "python": sys.version.replace("\n", " "),
         "executable": sys.executable,
@@ -176,7 +165,6 @@ def _get_gmt_version():
     for modname in deps:
         print(f"  {modname}: {_get_module_version(modname)}")
     print(f"  ghostscript: {_get_ghostscript_version()}")
-    print(f"  gmt: {_get_gmt_version()}")
 
     print_clib_info()
 
diff --git a/pygmt/clib/session.py b/pygmt/clib/session.py
index 03902233bac..83373db1698 100644
--- a/pygmt/clib/session.py
+++ b/pygmt/clib/session.py
@@ -158,7 +158,8 @@ def info(self):
             self._info = {  # pylint: disable=attribute-defined-outside-init
                 "version": self.get_default("API_VERSION"),
                 "padding": self.get_default("API_PAD"),
-                "binary dir": self.get_default("API_BINDIR"),
+                # API_BINDIR points to the directory of the Python interpreter
+                # "binary dir": self.get_default("API_BINDIR"),
                 "share dir": self.get_default("API_SHAREDIR"),
                 # This segfaults for some reason
                 # 'data dir': self.get_default("API_DATADIR"),
@@ -169,6 +170,9 @@ def info(self):
                 # "image layout": self.get_default("API_IMAGE_LAYOUT"),
                 "grid layout": self.get_default("API_GRID_LAYOUT"),
             }
+            # API_BIN_VERSION is new in GMT 6.4.0.
+            if Version(self._info["version"]) >= Version("6.4.0"):
+                self._info["binary version"] = self.get_default("API_BIN_VERSION")
         return self._info
 
     def __enter__(self):
diff --git a/pygmt/tests/test_clib.py b/pygmt/tests/test_clib.py
index 5bf1b7f2248..9120af22d06 100644
--- a/pygmt/tests/test_clib.py
+++ b/pygmt/tests/test_clib.py
@@ -873,7 +873,10 @@ def mock_defaults(api, name, value):  # pylint: disable=unused-argument
         """
         Put 'bla' in the value buffer.
         """
-        value.value = b"bla"
+        if name == b"API_VERSION":
+            value.value = b"1.2.3"
+        else:
+            value.value = b"bla"
         return 0
 
     ses = clib.Session()
@@ -881,8 +884,11 @@ def mock_defaults(api, name, value):  # pylint: disable=unused-argument
     with mock(ses, "GMT_Get_Default", mock_func=mock_defaults):
         # Check for an empty dictionary
         assert ses.info
-        for value in ses.info.values():
-            assert value == "bla"
+        for key, value in ses.info.items():
+            if key == "version":
+                assert value == "1.2.3"
+            else:
+                assert value == "bla"
     ses.destroy()