INSTALL       | 34 +++++++++++++++++++---------------
 NEWS          |  8 ++++++++
 VERSION       |  2 +-
 common.mk     |  9 +++++----
 download.texi | 36 +++++++++++++++++++++---------------
 makedist.sh   | 24 +++++++++++++++++++-----
 news.texi     |  6 ++++++

diff --git a/INSTALL b/INSTALL
index 1353e02a06d7389ea17a48d64b7117748a5dfffce8f93b9f1683031e7f2ee81d..cff1dfb858b2309ca36c8960e29100e0ed40f9ee81748cd668bceacb0d902bb7 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,28 +1,29 @@
 Preferable way is to download tarball with the signature from official
 website and, for example, run tests with benchmarks:
 
-    % wget http://gogost.cypherpunks.ru/gogost-1.1.tar.xz
-    % wget http://gogost.cypherpunks.ru/gogost-1.1.tar.xz.sig
-    % gpg --verify gogost-1.1.tar.xz.sig gogost-1.1.tar.xz
-    % xz -d < gogost-1.1.tar.xz | tar xf -
-    % make -C gogost-1.1 all bench
-    % echo hello world | ./gogost-1.1/streebog256
+    $ wget http://gogost.cypherpunks.ru/gogost-4.1.0.tar.xz
+    $ wget http://gogost.cypherpunks.ru/gogost-4.1.0.tar.xz.sig
+    $ gpg --verify gogost-4.1.0.tar.xz.sig gogost-4.1.0.tar.xz
+    $ xz -d < gogost-4.1.0.tar.xz | tar xf -
+    $ make -C gogost-4.1.0 all bench
+    $ echo hello world | ./gogost-4.1.0/streebog256
     f72018189a5cfb803dbe1f2149cf554c40093d8e7f81c21e08ac5bcd09d9934d
 
 And then you can include its source code in your project for example
 like this:
 
-    % mkdir -p myproj/src
-    % export GOPATH=$PWD/myproj
-    % cd myproj/src
-    % cat > main.go <<EOF
+    $ mkdir -p myproj/src
+    $ cp -r gogost-4.1.0/src/go.cypherpunks.ru myproj/src
+    $ export GOPATH=$PWD/myproj
+    $ cd myproj/src
+    $ cat > main.go <<EOF
     package main
 
     import (
         "encoding/hex"
         "fmt"
 
-        "cypherpunks.ru/gogost/gost34112012256"
+        "go.cypherpunks.ru/gogost/v4/gost34112012256"
     )
 
     func main() {
@@ -31,10 +32,13 @@         h.Write([]byte("hello world"))
         fmt.Println(hex.EncodeToString(h.Sum(nil)))
     }
     EOF
-    % cp -r ../../gogost-1.1/src/cypherpunks.ru .
-    % go run main.go
+    $ go run main.go
     c600fd9dd049cf8abd2f5b32e840d2cb0e41ea44de1c155dcd88dc84fe58a855
 
+GoGOST is also go-get-able. For example to use streebog256 utility:
+
+    $ go get go.cypherpunks.ru/gogost/cmd/streebog256
+
 You have to verify downloaded tarballs integrity and authenticity to be
 sure that you retrieved trusted and untampered software. GNU Privacy
 Guard is used for that purpose.
@@ -48,5 +52,5 @@           CEBD 1282 2C46 9C02 A81A  0467 8234 3436 696F C85A
     uid   GoGOST releases <gogost at cypherpunks dot ru>
 
     Look in PUBKEY.asc file.
-    % gpg --auto-key-locate dane --locate-keys gogost at cypherpunks dot ru
-    % gpg --auto-key-locate wkd --locate-keys gogost at cypherpunks dot ru
+    $ gpg --auto-key-locate dane --locate-keys gogost at cypherpunks dot ru
+    $ gpg --auto-key-locate wkd --locate-keys gogost at cypherpunks dot ru
diff --git a/NEWS b/NEWS
index 0d3b5fcba5440fdc140aafc3f1b571a2e1296de74282fa9f2a9a84ee7d1b1ad7..e21170c9457a9020c367855c8785f18ae8a90e15cb9d0a228e2b6edb56f71991 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+4.1:
+    * ESPTREE implementation
+    * CurveIdtc26gost34102012256paramSetB, CurveIdtc26gost34102012256paramSetC,
+      CurveIdtc26gost34102012256paramSetD curve aliases
+    * Forbid any later GNU GPL version autousage
+      (project's licence now is GNU GPLv3 only)
+    * Project now is go-get-able: go get go.cypherpunks.ru/gogost/v4
+
 4.0:
     * Backward incompatible change: all keys passing to encryption
       functions are slices now, not the fixed arrays. That heavily
diff --git a/VERSION b/VERSION
index dddd2b6fe8e64351ebd48d13898cd77b3dd21803c72f8a028b265ed6c316055f..1895f81d1738a241e12e69233c2d67e0f2283cc2a6c9b2db4f148658fcdf4d58 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0
+4.1
diff --git a/common.mk b/common.mk
index cd0d63456643b89227ddab1d74e825a24c914a0764ca34b578cc58238eaf91f9..4718f8bfdccf23612558af7150853ae2c2247643ac2ff2cbcd8bc9ee36b5d499 100644
--- a/common.mk
+++ b/common.mk
@@ -1,12 +1,13 @@
-LDFLAGS = -X cypherpunks.ru/gogost.Version=$(VERSION)
+MOD = go.cypherpunks.ru/gogost/v4
+LDFLAGS = -X $(MOD).Version=$(VERSION)
 
 all: streebog256 streebog512
 
 streebog256:
-	GOPATH=$(GOPATH) go build -ldflags "$(LDFLAGS)" cypherpunks.ru/gogost/cmd/streebog256
+	GOPATH=$(GOPATH) go build -ldflags "$(LDFLAGS)" $(MOD)/cmd/streebog256
 
 streebog512:
-	GOPATH=$(GOPATH) go build -ldflags "$(LDFLAGS)" cypherpunks.ru/gogost/cmd/streebog512
+	GOPATH=$(GOPATH) go build -ldflags "$(LDFLAGS)" $(MOD)/cmd/streebog512
 
 bench:
-	GOPATH=$(GOPATH) go test -benchmem -bench . cypherpunks.ru/gogost/...
+	GOPATH=$(GOPATH) go test -benchmem -bench . $(MOD)/...
diff --git a/download.texi b/download.texi
index 18a9b438374440a955673cca6bf666352a7d89e7f13632787eeead55fc720734..b1a86a410871c678bd98ef3c12e3cf56f9f16431ba00a3f9cb9e0af4adafd4d8 100644
--- a/download.texi
+++ b/download.texi
@@ -5,12 +5,12 @@ Preferable way is to download tarball with the signature from
 website and, for example, run tests with benchmarks:
 
 @verbatim
-% wget http://gogost.cypherpunks.ru/gogost-4.0.tar.xz
-% wget http://gogost.cypherpunks.ru/gogost-4.0.tar.xz.sig
-% gpg --verify gogost-4.0.tar.xz.sig gogost-4.0.tar.xz
-% xz -d < gogost-4.0.tar.xz | tar xf -
-% make -C gogost-4.0 all bench
-% echo hello world | ./gogost-4.0/streebog256
+$ wget http://gogost.cypherpunks.ru/gogost-4.1.0.tar.xz
+$ wget http://gogost.cypherpunks.ru/gogost-4.1.0.tar.xz.sig
+$ gpg --verify gogost-4.1.0.tar.xz.sig gogost-4.1.0.tar.xz
+$ xz -d < gogost-4.1.0.tar.xz | tar xf -
+$ make -C gogost-4.1.0 all bench
+$ echo hello world | ./gogost-4.1.0/streebog256
 f72018189a5cfb803dbe1f2149cf554c40093d8e7f81c21e08ac5bcd09d9934d
 @end verbatim
 
@@ -18,17 +18,18 @@ And then you can include its source code in your project for example
 like this:
 
 @verbatim
-% mkdir -p myproj/src
-% export GOPATH=$PWD/myproj
-% cd myproj/src
-% cat > main.go <<EOF
+$ mkdir -p myproj/src
+$ cp -r gogost-4.1.0/src/go.cypherpunks.ru myproj/src
+$ export GOPATH=$PWD/myproj
+$ cd myproj/src
+$ cat > main.go <<EOF
 package main
 
 import (
     "encoding/hex"
     "fmt"
 
-    "cypherpunks.ru/gogost/gost34112012256"
+    "go.cypherpunks.ru/gogost/v4/gost34112012256"
 )
 
 func main() {
@@ -37,9 +38,14 @@     h.Write([]byte("hello world"))
     fmt.Println(hex.EncodeToString(h.Sum(nil)))
 }
 EOF
-% cp -r ../../gogost-4.0/src/cypherpunks.ru .
-% go run main.go
+$ go run main.go
 c600fd9dd049cf8abd2f5b32e840d2cb0e41ea44de1c155dcd88dc84fe58a855
+@end verbatim
+
+GoGOST is also @command{go get}-able. For example to use
+@command{streebog256} utility:
+@verbatim
+$ go get go.cypherpunks.ru/gogost/cmd/streebog256
 @end verbatim
 
 @multitable {XXXXX} {XXXX-XX-XX} {XXXX KiB} {link sign} {xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx} {xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}
@@ -93,8 +99,8 @@ @item @url{https://lists.cypherpunks.ru/mailman/listinfo/gost, gost} maillist
 
 @item
 @verbatim
-% gpg --auto-key-locate dane --locate-keys gogost at cypherpunks dot ru
-% gpg --auto-key-locate wkd --locate-keys gogost at cypherpunks dot ru
+$ gpg --auto-key-locate dane --locate-keys gogost at cypherpunks dot ru
+$ gpg --auto-key-locate wkd --locate-keys gogost at cypherpunks dot ru
 @end verbatim
 
 @item
diff --git a/makedist.sh b/makedist.sh
index 1a6ea480b427b564dd5f1631e3ecaa8e4f35e7436f3b6771ea1ac16aa59b1e8e..efd25d3987101fd4070b56b1def1492c0a848f0fba1e585c02079ec4572d030d 100755
--- a/makedist.sh
+++ b/makedist.sh
@@ -9,14 +9,28 @@ git clone . $tmp/gogost-$release
 cd $tmp/gogost-$release
 git checkout $release
 
-crypto_path=src/cypherpunks.ru/gogost/vendor/golang.org/x/crypto
-mkdir -p $crypto_path
-( cd $cur/gopath/pkg/mod/golang.org/x/crypto@v0.0.0-20190701094942-4def268fd1a4 ; \
+mod_name=$(sed -n 's/^module //p' go.mod)
+crypto_mod_path=$(sed -n 's#^require \(golang.org/x/crypto\) \(.*\)$#\1@\2#p' go.mod)
+mkdir -p src/$mod_name
+mv \
+    gost28147 \
+    gost3410 \
+    gost34112012256 \
+    gost34112012512 \
+    gost341194 \
+    gost3412128 \
+    gost341264 \
+    gost3413 \
+    mgm \
+    internal gogost.go go.mod go.sum src/$mod_name
+
+mkdir -p src/golang.org/x/crypto
+( cd $GOPATH/pkg/mod/$crypto_mod_path ; \
     tar cf - AUTHORS CONTRIBUTORS LICENSE PATENTS README.md pbkdf2 hkdf ) |
-    tar xfC - $crypto_path
+    tar xfC - src/golang.org/x/crypto
 
 find . -name .git -type d | xargs rm -fr
-rm -f www* makedist* TODO
+rm -f www* news.texi style.css makedist* TODO
 
 find . -type d -exec chmod 700 {} \;
 find . -type f -exec chmod 600 {} \;
diff --git a/news.texi b/news.texi
index 639947589f3b9b97f1436732bc5787bfafb8881e66e1e1efea5a60351821ba37..feb05bbd0404439d24908bce1ad2f523faf45cc01adabfa7f264cb8c9de10f6f 100644
--- a/news.texi
+++ b/news.texi
@@ -7,6 +7,12 @@ @anchor{Release 4.1}
 @item 4.1
     @itemize
     @item @code{ESPTREE} implementation
+    @item @code{CurveIdtc26gost34102012256paramSetB},
+        @code{CurveIdtc26gost34102012256paramSetC},
+        @code{CurveIdtc26gost34102012256paramSetD} curve aliases
+    @item Forbid any later GNU GPL version autousage
+        (project's licence now is GNU GPLv3 only)
+    @item Project now is go-get-able: @command{go get go.cypherpunks.ru/gogost/v4}
 
     @end itemize