diff --git a/OTP-20.1.2.tar.gz b/OTP-20.1.2.tar.gz
deleted file mode 100644
index 79de37f..0000000
--- a/OTP-20.1.2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f3d370015c3544503cb76cfaf0bfc8de0f35d89eee206db9f1b9603cbffd8907
-size 52735077
diff --git a/OTP-20.1.5.tar.gz b/OTP-20.1.5.tar.gz
new file mode 100644
index 0000000..61f047b
--- /dev/null
+++ b/OTP-20.1.5.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6d5436f41886922c1b68f28305153118e531f22d0cf0bb8e0dcf93b1b1d75d41
+size 52736451
diff --git a/erlang.changes b/erlang.changes
index db3785d..8d529ae 100644
--- a/erlang.changes
+++ b/erlang.changes
@@ -1,3 +1,41 @@
+-------------------------------------------------------------------
+Mon Nov 27 07:46:03 UTC 2017 - matwey.kornilov@gmail.com
+
+- Update to 20.1.5:
+  * erts: Fixed a regression in zlib:gunzip/1 that prevented it
+    from working when the decompressed size was a perfect multiple
+    of 16384. This regression was introduced in 20.1.1
+  * erts: Fixed a memory corruption bug in enif_inspect_iovec;
+    writable binaries stayed writable after entering the iovec.
+  * erts: Fixed a crash in enif_inspect_iovec on encountering empty
+    binaries.
+  * erts: zlib:deflateParams/3 will no longer return buf_error when
+    called after zlib:deflate/2 with zlib 1.2.11.
+  * inets: Correct the handling of location headers so that the
+    status code is not hard coded. This should have been fixed by
+    commit 2cc5ba70cbbc6b3ace81a2a0324417c3b65265bb but
+    unfortunately was broken during a code refactoring and
+    unnoticed due to a faulty placed test case.
+
+- Update to 20.1.4:
+  * inets: Fix broken handling of POST requests
+  * inets: Make sure ints:stop/2 of the service httpd is
+    synchronous
+  * inets: Honor status code returned by ESI script and modernize
+    "location" header handling.
+
+- Update to 20.1.3:
+  * diameter: A fault introduced in diameter 2.1 could cause decode
+    errors to be ignored in AVPs following the header of aGrouped
+    AVP.
+  * erts: Added zlib:set_controlling_process/2 to move a zstream()
+    between processes.
+  * erts: Fix so that schedulers are bound correctly when the first
+    available cpu is not the first detected cpu. e.g. when using
+    "taskset -c X..Y" when X is not equal to 0.
+  * snmp: The recbuf configuration option was not propagated
+    correctly to the socket for the SNMP Manager. 
+
 -------------------------------------------------------------------
 Thu Nov 23 13:49:29 UTC 2017 - rbrown@suse.com
 
diff --git a/erlang.spec b/erlang.spec
index e47548f..b4285a2 100644
--- a/erlang.spec
+++ b/erlang.spec
@@ -26,7 +26,7 @@
 %endif
 
 Name:           erlang
-Version:        20.1.2
+Version:        20.1.5
 Release:        0
 # not set up to be built with position independend executable support
 #!BuildIgnore:	gcc-PIE
@@ -588,7 +588,6 @@ getent passwd epmd || /usr/sbin/useradd -g epmd -s /bin/false -r -c "Erlang Port
 %exclude %{_libdir}/erlang/lib/dialyzer-*/src
 %exclude %{_libdir}/erlang/lib/diameter-*/src
 %exclude %{_libdir}/erlang/lib/et-*/src
-%exclude %{_libdir}/erlang/lib/gs-*/src
 %exclude %{_libdir}/erlang/lib/jinterface-*/java_src
 %exclude %{_libdir}/erlang/lib/reltool-*/src
 %exclude %{_libdir}/erlang/lib/observer-*/src
diff --git a/otp-R16B-rpath.patch b/otp-R16B-rpath.patch
index ec07e20..01fdbdd 100644
--- a/otp-R16B-rpath.patch
+++ b/otp-R16B-rpath.patch
@@ -24,16 +24,3 @@ Index: otp-OTP-20.0.1/lib/crypto/priv/Makefile
  	-o $@ $^ -lcrypto
  
  $(DLL_NIFLIB): $(OBJS)
-Index: otp-OTP-20.0.1/lib/odbc/c_src/odbcserver.c
-===================================================================
---- otp-OTP-20.0.1.orig/lib/odbc/c_src/odbcserver.c
-+++ otp-OTP-20.0.1/lib/odbc/c_src/odbcserver.c
-@@ -107,6 +107,8 @@
- #ifdef UNIX
- #include <unistd.h>
- #include <netinet/tcp.h>
-+#include <ctype.h>
-+#include <arpa/inet.h>
- #endif 
- 
- #if defined WIN32