diff --git a/ext/rugged/rugged_allocator.c b/ext/rugged/rugged_allocator.c
index 30ee53790..0059af66f 100644
--- a/ext/rugged/rugged_allocator.c
+++ b/ext/rugged/rugged_allocator.c
@@ -13,58 +13,11 @@ static void *rugged_gmalloc(size_t n, const char *file, int line)
 	return xmalloc(n);
 }
 
-static void *rugged_gcalloc(size_t nelem, size_t elsize, const char *file, int line)
-{
-	return xcalloc(nelem, elsize);
-}
-
-static char *rugged_gstrdup(const char *str, const char *file, int line)
-{
-	return ruby_strdup(str);
-}
-
-static char *rugged_gstrndup(const char *str, size_t n, const char *file, int line)
-{
-	size_t len;
-	char *newstr;
-
-	len = strnlen(str, n);
-	if (len < n)
-		n = len;
-
-	newstr = xmalloc(n+1);
-	memcpy(newstr, str, n);
-	newstr[n] = '\0';
-
-	return newstr;
-}
-
-static char *rugged_gsubstrdup(const char *str, size_t n, const char *file, int line)
-{
-	char *newstr;
-
-	newstr = xmalloc(n+1);
-	memcpy(newstr, str, n);
-	newstr[n] = '\0';
-
-	return newstr;
-}
-
 static void *rugged_grealloc(void *ptr, size_t size, const char *file, int line)
 {
 	return xrealloc(ptr, size);
 }
 
-static void *rugged_greallocarray(void *ptr, size_t nelem, size_t elsize, const char *file, int line)
-{
-	return xrealloc2(ptr, nelem, elsize);
-}
-
-static void *rugged_gmallocarray(size_t nelem, size_t elsize, const char *file, int line)
-{
-	return xmalloc2(nelem, elsize);
-}
-
 static void rugged_gfree(void *ptr)
 {
 	xfree(ptr);
@@ -75,14 +28,7 @@ void rugged_set_allocator(void)
 	git_allocator allocator;
 
 	allocator.gmalloc = rugged_gmalloc;
-	allocator.gcalloc = rugged_gcalloc;
-	allocator.gstrdup = rugged_gstrdup;
-	allocator.gstrndup = rugged_gstrndup;
-	allocator.gstrndup = rugged_gstrndup;
-	allocator.gsubstrdup = rugged_gsubstrdup;
 	allocator.grealloc = rugged_grealloc;
-	allocator.greallocarray = rugged_greallocarray;
-	allocator.gmallocarray = rugged_gmallocarray;
 	allocator.gfree = rugged_gfree;
 
 	git_libgit2_opts(GIT_OPT_SET_ALLOCATOR, &allocator);
diff --git a/lib/rugged/version.rb b/lib/rugged/version.rb
index 56da7e4c3..b4929f5bf 100644
--- a/lib/rugged/version.rb
+++ b/lib/rugged/version.rb
@@ -4,5 +4,5 @@
 # For full terms see the included LICENSE file.
 
 module Rugged
-  Version = VERSION = '1.5.0'
+  Version = VERSION = '1.7.1'
 end
diff --git a/vendor/libgit2 b/vendor/libgit2
index 8f8e805e3..a2bde6374 160000
--- a/vendor/libgit2
+++ b/vendor/libgit2
@@ -1 +1 @@
-Subproject commit 8f8e805e3f37e49563c33a0c67fcf7f0d2e9101c
+Subproject commit a2bde63741977ca0f4ef7db2f609df320be67a08