diff --git a/bc-1.06-dc_ibase.patch b/bc-1.06-dc_ibase.patch
deleted file mode 100644
index 96cbff6..0000000
--- a/bc-1.06-dc_ibase.patch
+++ /dev/null
@@ -1,60 +0,0 @@
-Index: dc/numeric.c
-===================================================================
---- dc/numeric.c.orig
-+++ dc/numeric.c
-@@ -307,6 +307,8 @@ dc_getnum DC_DECLARG((input, ibase, read
- 	int		digit;
- 	int		decimal;
- 	int		c;
-+	int		c_buff = 0;
-+	int		multi = 0;
- 
- 	bc_init_num(&tmp);
- 	bc_init_num(&build);
-@@ -324,6 +326,9 @@ dc_getnum DC_DECLARG((input, ibase, read
- 	}
- 	while (isspace(c))
- 		c = (*input)();
-+	c_buff = (*input)();
-+	if (isdigit(c_buff) || ('A' <= c_buff && c_buff <= 'F') || c_buff == '.')
-+			multi = 1;
- 	for (;;){
- 		if (isdigit(c))
- 			digit = c - '0';
-@@ -331,10 +336,15 @@ dc_getnum DC_DECLARG((input, ibase, read
- 			digit = 10 + c - 'A';
- 		else
- 			break;
--		c = (*input)();
-+		digit = multi ? (digit >= ibase ? ibase -1 : digit) : digit;
- 		bc_int2num(&tmp, digit);
- 		bc_multiply(result, base, &result, 0);
- 		bc_add(result, tmp, &result, 0);
-+		if (c_buff) {
-+			c = c_buff;
-+			c_buff = 0;
-+		} else
-+			c = (*input)();
- 	}
- 	if (c == '.'){
- 		bc_free_num(&build);
-@@ -343,13 +353,18 @@ dc_getnum DC_DECLARG((input, ibase, read
- 		build = bc_copy_num(_zero_);
- 		decimal = 0;
- 		for (;;){
--			c = (*input)();
-+			if (c_buff) {
-+				c = c_buff;
-+				c_buff = 0;
-+			} else
-+				c = (*input)();
- 			if (isdigit(c))
- 				digit = c - '0';
- 			else if ('A' <= c && c <= 'F')
- 				digit = 10 + c - 'A';
- 			else
- 				break;
-+			digit = digit >= ibase ? ibase -1 : digit;
- 			bc_int2num(&tmp, digit);
- 			bc_multiply(build, base, &build, 0);
- 			bc_add(build, tmp, &build, 0);
diff --git a/bc.changes b/bc.changes
index 68c9fb0..0cab37f 100644
--- a/bc.changes
+++ b/bc.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Oct 15 14:20:20 UTC 2020 - pgajdos@suse.com
+
+- fix [bsc#1177579] -- wrong clamping of hexadecimal digits in dc
+- deleted patches
+  - bc-1.06-dc_ibase.patch (upstreamed)
+
 -------------------------------------------------------------------
 Wed Aug 28 11:33:46 CEST 2019 - kukuk@suse.de
 
diff --git a/bc.spec b/bc.spec
index 6413bf7..c96248b 100644
--- a/bc.spec
+++ b/bc.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package bc
 #
-# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -22,11 +22,10 @@ Release:        0
 Summary:        GNU Command Line Calculator
 License:        GPL-2.0-or-later
 Group:          Productivity/Scientific/Math
-Url:            https://www.gnu.org/software/bc/
+URL:            https://www.gnu.org/software/bc/
 Source0:        https://ftp.gnu.org/gnu/bc/bc-%{version}.tar.gz
 Source1:        https://ftp.gnu.org/gnu/bc/bc-%{version}.tar.gz.sig
 Source2:        %{name}.keyring
-Patch1:         bc-1.06-dc_ibase.patch
 # Correct return value after 'q' [bsc#1129038]
 Patch2:         bc-dc-correct-return-value.patch
 BuildRequires:  bison
@@ -58,7 +57,6 @@ and "pushes" its results back onto the stack.
 
 %prep
 %setup -q
-%patch1
 %patch2 -p1
 
 %build