diff --git a/debian/changelog b/debian/changelog
index 63b4ee4..23da0d8 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+hashdeep (4.4-7.1) unstable; urgency=medium
+
+ * Non-maintainer upload.
+ * Add upstream fix for FTBFS with gcc 11. (Closes: #984166)
+
+ -- Adrian Bunk <bunk@debian.org> Tue, 23 Nov 2021 20:46:29 +0200
+
hashdeep (4.4-7) unstable; urgency=medium
[ Debian Janitor ]
diff --git a/debian/patches/0001-Fix-errors-found-by-clang.patch b/debian/patches/0001-Fix-errors-found-by-clang.patch
new file mode 100644
index 0000000..f23619d
--- /dev/null
+++ b/debian/patches/0001-Fix-errors-found-by-clang.patch
@@ -0,0 +1,32 @@
+From 6ef69a26126ee4e69a25392fd456b8a66c51dffd Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 15 Nov 2016 02:46:55 +0000
+Subject: Fix errors found by clang
+
+Fixes errors like
+
+../../git/src/hash.cpp:282:19: error: ordered comparison between pointer and zero ('const unsigned char *' and 'int')
+ if(fdht->base>0){
+ ~~~~~~~~~~^~
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/hash.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hash.cpp b/src/hash.cpp
+index 4216157..52f419b 100644
+--- a/src/hash.cpp
++++ b/src/hash.cpp
+@@ -279,7 +279,7 @@ void file_data_hasher_t::hash()
+ MAP_FILE|
+ #endif
+ MAP_SHARED,fd,0);
+- if(fdht->base>0){
++ if(fdht->base != (void *) -1){
+ /* mmap is successful, so set the bounds.
+ * if it is not successful, we default to reading the fd
+ */
+--
+2.20.1
+
diff --git a/debian/patches/series b/debian/patches/series
index 14be520..acf1dda 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -1,2 +1,3 @@
fix-manpages.patch
fix-FTBFS-Hurd.patch
+0001-Fix-errors-found-by-clang.patch
