diff --git a/.gitattributes b/.gitattributes
index dde2f4c..e02cb9b 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -22,4 +22,4 @@
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 ## Specific LFS patterns
-nn-13406b1dcbe0.nnue filter=lfs diff=lfs merge=lfs -text
+nn-6877cd24400e.nnue filter=lfs diff=lfs merge=lfs -text
diff --git a/Stockfish-sf_14.1.tar.gz b/Stockfish-sf_14.1.tar.gz
deleted file mode 100644
index 7a62715..0000000
--- a/Stockfish-sf_14.1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:11d71018af47ba047175f846be72d8d9878df698e9b5d708ab158cf530633600
-size 187792
diff --git a/Stockfish-sf_15.tar.gz b/Stockfish-sf_15.tar.gz
new file mode 100644
index 0000000..f392ad3
--- /dev/null
+++ b/Stockfish-sf_15.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0553fe53ea57ce6641048049d1a17d4807db67eecd3531a3749401362a27c983
+size 189578
diff --git a/nn-13406b1dcbe0.nnue b/nn-13406b1dcbe0.nnue
deleted file mode 100644
index 081f3fc..0000000
--- a/nn-13406b1dcbe0.nnue
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:13406b1dcbe0a36dfc5e07da51d8db38b7a45d7da43078ec25a7624c2b83236f
-size 47001243
diff --git a/nn-6877cd24400e.nnue b/nn-6877cd24400e.nnue
new file mode 100644
index 0000000..ebb54f0
--- /dev/null
+++ b/nn-6877cd24400e.nnue
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6877cd24400e01b19ff12ae3068ae242152802bdd330e66f7b6703865251d6e3
+size 47001499
diff --git a/stockfish-remove-net.patch b/stockfish-remove-net.patch
new file mode 100644
index 0000000..2bc3f11
--- /dev/null
+++ b/stockfish-remove-net.patch
@@ -0,0 +1,69 @@
+diff -urEbw Stockfish-sf_15/src/Makefile Stockfish-sf_15.new/src/Makefile
+--- Stockfish-sf_15/src/Makefile	2022-04-18 22:03:20.000000000 +0200
++++ Stockfish-sf_15.new/src/Makefile	2022-04-20 21:20:19.092144400 +0200
+@@ -722,7 +722,6 @@
+ 	@echo ""
+ 	@echo "help                    > Display architecture details"
+ 	@echo "build                   > Standard build"
+-	@echo "net                     > Download the default nnue net"
+ 	@echo "profile-build           > Faster build (with profile-guided optimization)"
+ 	@echo "strip                   > Strip executable"
+ 	@echo "install                 > Install executable"
+@@ -783,14 +782,14 @@
+ endif
+ 
+ 
+-.PHONY: help build profile-build strip install clean net objclean profileclean \
++.PHONY: help build profile-build strip install clean objclean profileclean \
+         config-sanity icc-profile-use icc-profile-make gcc-profile-use gcc-profile-make \
+         clang-profile-use clang-profile-make
+ 
+-build: net config-sanity
++build: config-sanity
+ 	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) all
+ 
+-profile-build: net config-sanity objclean profileclean
++profile-build: config-sanity objclean profileclean
+ 	@echo ""
+ 	@echo "Step 1/4. Building instrumented executable ..."
+ 	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) $(profile_make)
+@@ -817,30 +816,6 @@
+ clean: objclean profileclean
+ 	@rm -f .depend *~ core
+ 
+-# evaluation network (nnue)
+-net:
+-	$(eval nnuenet := $(shell grep EvalFileDefaultName evaluate.h | grep define | sed 's/.*\(nn-[a-z0-9]\{12\}.nnue\).*/\1/'))
+-	@echo "Default net: $(nnuenet)"
+-	$(eval nnuedownloadurl := https://tests.stockfishchess.org/api/nn/$(nnuenet))
+-	$(eval curl_or_wget := $(shell if hash curl 2>/dev/null; then echo "curl -skL"; elif hash wget 2>/dev/null; then echo "wget -qO-"; fi))
+-	@if test -f "$(nnuenet)"; then \
+-            echo "Already available."; \
+-         else \
+-            if [ "x$(curl_or_wget)" = "x" ]; then \
+-               echo "Automatic download failed: neither curl nor wget is installed. Install one of these tools or download the net manually"; exit 1; \
+-            else \
+-               echo "Downloading $(nnuedownloadurl)"; $(curl_or_wget) $(nnuedownloadurl) > $(nnuenet);\
+-            fi; \
+-        fi;
+-	$(eval shasum_command := $(shell if hash shasum 2>/dev/null; then echo "shasum -a 256 "; elif hash sha256sum 2>/dev/null; then echo "sha256sum "; fi))
+-	@if [ "x$(shasum_command)" != "x" ]; then \
+-	    if [ "$(nnuenet)" != "nn-"`$(shasum_command) $(nnuenet) | cut -c1-12`".nnue" ]; then \
+-                echo "Failed download or $(nnuenet) corrupted, please delete!"; exit 1; \
+-            fi \
+-         else \
+-            echo "shasum / sha256sum not found, skipping net validation"; \
+-        fi
+-
+ # clean binaries and objects
+ objclean:
+ 	@rm -f stockfish stockfish.exe *.o ./syzygy/*.o ./nnue/*.o ./nnue/features/*.o
+@@ -864,7 +839,7 @@
+ 
+ all: $(EXE) .depend
+ 
+-config-sanity: net
++config-sanity: 
+ 	@echo ""
+ 	@echo "Config:"
+ 	@echo "debug: '$(debug)'"
diff --git a/stockfish.changes b/stockfish.changes
index f3651d7..9bc3472 100644
--- a/stockfish.changes
+++ b/stockfish.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Wed Apr 20 19:17:58 UTC 2022 - Michael Vetter <mvetter@suse.com>
+
+- Update to 15:
+  Stockfish 15 continues to push the boundaries of chess, providing
+  unrivalled analysis and playing strength. In our testing, Stockfish
+  15 is ahead of Stockfish 14 by 36 Elo points and wins nine times
+  more game pairs than it loses.
+- Add stockfish-remove-net.patch: Don't try to donwload nnue
+  we already have it.
+
 -------------------------------------------------------------------
 Sun Mar 27 18:37:33 UTC 2022 - Dirk Müller <dmueller@suse.com>
 
diff --git a/stockfish.spec b/stockfish.spec
index 6abe278..526d6f2 100644
--- a/stockfish.spec
+++ b/stockfish.spec
@@ -17,9 +17,9 @@
 
 
 # See evaluate.h > EvalFileDefaultName
-%define nnuenet nn-13406b1dcbe0.nnue
+%define nnuenet nn-6877cd24400e.nnue
 Name:           stockfish
-Version:        14.1
+Version:        15
 Release:        0
 Summary:        Chess engine
 License:        GPL-3.0-or-later
@@ -31,6 +31,8 @@ Source10:       https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/vivid/%{nam
 Source11:       https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/vivid/%{name}/vivid/download/head:/%{name}.6-20091204230329-yljoyxocuxhxg1ot-76/%{name}.6
 # If 'Version' is not set it will display the date as version number. We dont want __DATE__ and Version is set anyways.
 Patch0:         date.patch
+# Don't try to download file. We already have it.
+Patch1:         stockfish-remove-net.patch
 BuildRequires:  dos2unix
 BuildRequires:  gcc-c++
 BuildRequires:  xz
@@ -51,6 +53,7 @@ information about how to use Stockfish with your GUI.
 %prep
 %setup -q -n Stockfish-sf_%{version}
 %patch0 -p1
+%patch1 -p1
 cp %{SOURCE1} src/
 cp -p %{SOURCE10} %{SOURCE11} .