diff --git a/pkgs/applications/misc/subsurface/default.nix b/pkgs/applications/misc/subsurface/default.nix
index be4a004fb8b..a1b03f48b22 100644
--- a/pkgs/applications/misc/subsurface/default.nix
+++ b/pkgs/applications/misc/subsurface/default.nix
@@ -20,15 +20,14 @@
 }:
 
 stdenv.mkDerivation rec {
-  version = "4.5.6";
+  version = "4.5.97";
   name = "subsurface-${version}";
 
-  # use fetchgit instead of the official tgz is not complete
   src = fetchgit {
-    sha256 = "156rqcszy0c4plk2mv7wdd4h7s7mygpq5sdc64pjfs4qvvsdj10f";
+    sha256 = "0mbf8m5sbimbyvlh65sjlydrycr4ssfyfzdlqyl0wcpzw7h0qfp8";
     url = "git://git.subsurface-divelog.org/subsurface";
-    rev = "4d8d7c2a0fa1b4b0e6953d92287c75b6f97472d0";
-    branchName = "v4.5-branch";
+    rev = "5f15ad5a86ada3c5e574041a5f9d85235322dabb";
+    branchName = "master";
   };
 
   buildInputs = [ qtbase libdivecomputer libmarble-ssrf libxslt
@@ -43,8 +42,7 @@ stdenv.mkDerivation rec {
     marble_libs=$(echo $(echo $CMAKE_LIBRARY_PATH | grep -o "/nix/store/[[:alnum:]]*-libmarble-ssrf-[a-zA-Z0-9\-]*/lib")/libssrfmarblewidget.so)
     cmakeFlags="$cmakeFlags -DCMAKE_BUILD_TYPE=Debug \
                             -DMARBLE_LIBRARIES=$marble_libs \
-                            -DNO_PRINTING=OFF \
-                            -DUSE_LIBGIT23_API=1"
+                            -DNO_PRINTING=OFF"
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/libraries/git2/0.23.nix b/pkgs/development/libraries/git2/0.23.nix
deleted file mode 100644
index 3cf429ab1d7..00000000000
--- a/pkgs/development/libraries/git2/0.23.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{ stdenv, fetchurl, pkgconfig, cmake, zlib, python, libssh2, openssl, http-parser, libiconv }:
-
-stdenv.mkDerivation (rec {
-  version = "0.23.2";
-  name = "libgit2-${version}";
-
-  src = fetchurl {
-    name = "${name}.tar.gz";
-    url = "https://github.com/libgit2/libgit2/tarball/v${version}";
-    sha256 = "1d3901bmgvdnmzrx21afi1d0llsqmca3ckj942p0i2wpdpr1kbcp";
-  };
-
-  cmakeFlags = "-DTHREADSAFE=ON";
-
-  nativeBuildInputs = [ cmake python pkgconfig ];
-  buildInputs = [ zlib libssh2 openssl http-parser ];
-
-  meta = {
-    description = "the Git linkable library";
-    homepage = http://libgit2.github.com/;
-    license = stdenv.lib.licenses.gpl2;
-    platforms = with stdenv.lib.platforms; all;
-  };
-} // stdenv.lib.optionalAttrs (!stdenv.isLinux) {
-  NIX_LDFLAGS = "-liconv";
-  propagatedBuildInputs = [ libiconv ];
-})
diff --git a/pkgs/development/libraries/libdivecomputer/subsurface.nix b/pkgs/development/libraries/libdivecomputer/subsurface.nix
new file mode 100644
index 00000000000..5840ea2ef85
--- /dev/null
+++ b/pkgs/development/libraries/libdivecomputer/subsurface.nix
@@ -0,0 +1,25 @@
+{ stdenv, fetchgit, autoreconfHook }:
+
+stdenv.mkDerivation rec {
+  name = "libdivecomputer-${version}";
+  version = "ssrf-0.5.0";
+
+  src = fetchgit {
+    url = "git://subsurface-divelog.org/libdc";
+    rev = "534dd2f34b8271b2a1cac0e3151bfdc81da40e47";
+    branchName = "Subsurface-branch";
+    sha256 = "0iw9pczmwqlfjlgrik79b2pd4lmipxhjzj60ysk8qzl3axadjycp";
+  };
+
+  nativeBuildInputs = [ autoreconfHook ];
+
+  enableParallelBuilding = true;
+
+  meta = with stdenv.lib; {
+    homepage = http://www.libdivecomputer.org;
+    description = "A cross-platform and open source library for communication with dive computers from various manufacturers";
+    maintainers = [ maintainers.mguentner ];
+    license = licenses.lgpl21;
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c1008e9595d..de455514f39 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3832,10 +3832,9 @@ in
 
   su-exec = callPackage ../tools/security/su-exec {};
 
-  subsurface =
-    qt55.callPackage ../applications/misc/subsurface {
-        libgit2 = pkgs.libgit2_0_23;
-    };
+  subsurface = qt55.callPackage ../applications/misc/subsurface {
+    libdivecomputer = libdivecomputer_ssrf;
+  };
 
   sudo = callPackage ../tools/security/sudo { };
 
@@ -7219,7 +7218,6 @@ in
   );
 
   libgit2_0_21 = callPackage ../development/libraries/git2/0.21.nix { };
-  libgit2_0_23 = callPackage ../development/libraries/git2/0.23.nix { };
 
   gle = callPackage ../development/libraries/gle { };
 
@@ -7860,6 +7858,8 @@ in
 
   libdivecomputer = callPackage ../development/libraries/libdivecomputer { };
 
+  libdivecomputer_ssrf = callPackage ../development/libraries/libdivecomputer/subsurface.nix { };
+
   libdivsufsort = callPackage ../development/libraries/libdivsufsort { };
 
   libdmtx = callPackage ../development/libraries/libdmtx { };