diff --git a/.gitignore b/.gitignore
index f697ae0..49cb79f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-SOURCES/v0.3.12.tar.gz
+SOURCES/v0.3.15.tar.gz
diff --git a/.openblas.metadata b/.openblas.metadata
index 058300c..0f983c4 100644
--- a/.openblas.metadata
+++ b/.openblas.metadata
@@ -1 +1 @@
-ae647fed597ae891a7f122b9ddc6b15d4b7e0656 SOURCES/v0.3.12.tar.gz
+d7d1f67c1ef0c14c93761bdf44f0da8d0dd4bc0f SOURCES/v0.3.15.tar.gz
diff --git a/SOURCES/openblas-0.3.12-asmflags.patch b/SOURCES/openblas-0.3.15-asmflags.patch
similarity index 99%
rename from SOURCES/openblas-0.3.12-asmflags.patch
rename to SOURCES/openblas-0.3.15-asmflags.patch
index 1f767a7..5dafadb 100644
--- a/SOURCES/openblas-0.3.12-asmflags.patch
+++ b/SOURCES/openblas-0.3.15-asmflags.patch
@@ -1,8 +1,8 @@
 diff --git a/kernel/Makefile b/kernel/Makefile
-index e52781c6..c925837a 100644
+index 1a6c9413..afd54abc 100644
 --- a/kernel/Makefile
 +++ b/kernel/Makefile
-@@ -151,25 +151,32 @@ endif
+@@ -132,25 +132,32 @@ endif
  all : libs
  
  scabs1.$(SUFFIX): $(KERNELDIR)/$(SCABS_KERNEL)
@@ -42,7 +42,7 @@ index e52781c6..c925837a 100644
  endif
  
  setparam$(TSUFFIX).c : setparam-ref.c
-@@ -180,25 +187,32 @@ kernel$(TSUFFIX).h : $(KERNEL_INTERFACE)
+@@ -161,25 +168,32 @@ kernel$(TSUFFIX).h : $(KERNEL_INTERFACE)
  
  
  cpuid.$(SUFFIX): $(KERNELDIR)/cpuid.S
@@ -83,10 +83,10 @@ index e52781c6..c925837a 100644
  #ifdef DYNAMIC_ARCH
  clean ::
 diff --git a/kernel/Makefile.L1 b/kernel/Makefile.L1
-index 7ad94118..3487a9e3 100644
+index 09337363..a368277e 100644
 --- a/kernel/Makefile.L1
 +++ b/kernel/Makefile.L1
-@@ -545,217 +545,282 @@ endif
+@@ -553,217 +553,282 @@ endif
  
  
  $(KDIR)samax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)samax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(SAMAXKERNEL)
@@ -434,7 +434,7 @@ index 7ad94118..3487a9e3 100644
  
  ifeq ($(BUILD_BFLOAT16),1)
  $(KDIR)sbdot_k$(TSUFFIX).$(SUFFIX) $(KDIR)sbdot_k$(TPSUFFIX).$(PSUFFIX) : $(KERNELDIR)/$(SBDOTKERNEL)
-@@ -771,126 +836,165 @@ $(KDIR)dbf16tod_k$(TSUFFIX).$(SUFFIX) : $(KERNELDIR)/$(BF16TOKERNEL)
+@@ -779,126 +844,165 @@ $(KDIR)dbf16tod_k$(TSUFFIX).$(SUFFIX) : $(KERNELDIR)/$(BF16TOKERNEL)
  endif
  
  $(KDIR)sdot_k$(TSUFFIX).$(SUFFIX) $(KDIR)sdot_k$(TPSUFFIX).$(PSUFFIX) : $(KERNELDIR)/$(SDOTKERNEL)
@@ -529,14 +529,14 @@ index 7ad94118..3487a9e3 100644
 +	$(CC) $$CFLAGS -DCOMPLEX -c -DXDOUBLE $< -o $@
  
  $(KDIR)srot_k$(TSUFFIX).$(SUFFIX)  $(KDIR)srot_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(SROTKERNEL)
--	$(CC) -c $(CFLAGS) -UCOMPLEX -UCOMPLEX -UDOUBLE  $< -o $@
+-	$(CC) -c $(CFLAGS) $(FMAFLAG) -UCOMPLEX -UCOMPLEX -UDOUBLE  $< -o $@
 +	[[ "$<" == *.S ]] && CFLAGS="$(CFLAGS) $(ASMFLAGS)" || CFLAGS="$(CFLAGS)"; \
-+	$(CC) -c $$CFLAGS -UCOMPLEX -UCOMPLEX -UDOUBLE  $< -o $@
++	$(CC) -c $$CFLAGS $(FMAFLAG) -UCOMPLEX -UCOMPLEX -UDOUBLE  $< -o $@
  
  $(KDIR)drot_k$(TSUFFIX).$(SUFFIX)  $(KDIR)drot_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(DROTKERNEL)
--	$(CC) -c $(CFLAGS) -UCOMPLEX -UCOMPLEX -DDOUBLE  $< -o $@
+-	$(CC) -c $(CFLAGS) $(FMAFLAG) -UCOMPLEX -UCOMPLEX -DDOUBLE  $< -o $@
 +	[[ "$<" == *.S ]] && CFLAGS="$(CFLAGS) $(ASMFLAGS)" || CFLAGS="$(CFLAGS)"; \
-+	$(CC) -c $$CFLAGS -UCOMPLEX -UCOMPLEX -DDOUBLE  $< -o $@
++	$(CC) -c $$CFLAGS $(FMAFLAG) -UCOMPLEX -UCOMPLEX -DDOUBLE  $< -o $@
  
  $(KDIR)qrot_k$(TSUFFIX).$(SUFFIX)  $(KDIR)qrot_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(QROTKERNEL)
 -	$(CC) -c $(CFLAGS) -UCOMPLEX -UCOMPLEX -DXDOUBLE $< -o $@
@@ -640,10 +640,10 @@ index 7ad94118..3487a9e3 100644
  
  
 diff --git a/kernel/Makefile.L2 b/kernel/Makefile.L2
-index 79399c34..6d605f82 100644
+index 888a9b95..16e94c6a 100644
 --- a/kernel/Makefile.L2
 +++ b/kernel/Makefile.L2
-@@ -236,251 +236,320 @@ XBLASOBJS	+= \
+@@ -252,252 +252,321 @@ endif
  
  ifneq "$(or $(BUILD_SINGLE), $(BUILD_DOUBLE), $(BUILD_COMPLEX))" ""
  $(KDIR)sgemv_n$(TSUFFIX).$(SUFFIX)  $(KDIR)sgemv_n$(TSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(SGEMVNKERNEL) $(TOPDIR)/common.h $(GEMVDEP)
@@ -1032,9 +1032,10 @@ index 79399c34..6d605f82 100644
 +	[[ "$<" == *.S ]] && CFLAGS="$(CFLAGS) $(ASMFLAGS)" || CFLAGS="$(CFLAGS)"; \
 +	$(CC) -c $$CFLAGS -DCOMPLEX -DXDOUBLE -DLOWER -DHEMV -DHEMVREV $< -o $@
  
- 
+ ifeq ($(BUILD_BFLOAT16),1)
+ $(KDIR)sbgemv_n$(TSUFFIX).$(SUFFIX) $(KDIR)sbgemv_n$(TPSUFFIX).$(PSUFFIX) : $(KERNELDIR)/$(SBGEMVNKERNEL)
 diff --git a/kernel/Makefile.L3 b/kernel/Makefile.L3
-index 2ba593c2..110674b2 100644
+index d8d73996..60ca4c86 100644
 --- a/kernel/Makefile.L3
 +++ b/kernel/Makefile.L3
 @@ -526,119 +526,150 @@ XGEMMOTCOPYOBJ_P = $(XGEMMOTCOPYOBJ:.$(SUFFIX)=.$(PSUFFIX))
diff --git a/SOURCES/openblas-0.3.12-libname.patch b/SOURCES/openblas-0.3.15-libname.patch
similarity index 92%
rename from SOURCES/openblas-0.3.12-libname.patch
rename to SOURCES/openblas-0.3.15-libname.patch
index d75de48..f59d61e 100644
--- a/SOURCES/openblas-0.3.12-libname.patch
+++ b/SOURCES/openblas-0.3.15-libname.patch
@@ -1,8 +1,8 @@
 diff --git a/Makefile.system b/Makefile.system
-index 30d8f4cc..803219a8 100644
+index ae703e4d..80739dc4 100644
 --- a/Makefile.system
 +++ b/Makefile.system
-@@ -1425,16 +1425,16 @@ ifndef SMP
+@@ -1515,16 +1515,16 @@ ifndef SMP
  LIBNAME		= $(LIBPREFIX)_$(LIBCORE)$(REVISION).$(LIBSUFFIX)
  LIBNAME_P	= $(LIBPREFIX)_$(LIBCORE)$(REVISION)_p.$(LIBSUFFIX)
  else
diff --git a/SOURCES/openblas-0.3.12-noopt.patch b/SOURCES/openblas-0.3.15-noopt.patch
similarity index 100%
rename from SOURCES/openblas-0.3.12-noopt.patch
rename to SOURCES/openblas-0.3.15-noopt.patch
diff --git a/SOURCES/openblas-0.3.12-power-optimize.patch b/SOURCES/openblas-0.3.15-power-optimize.patch
similarity index 78%
rename from SOURCES/openblas-0.3.12-power-optimize.patch
rename to SOURCES/openblas-0.3.15-power-optimize.patch
index 5d82b6f..64f10ee 100644
--- a/SOURCES/openblas-0.3.12-power-optimize.patch
+++ b/SOURCES/openblas-0.3.15-power-optimize.patch
@@ -1,5 +1,5 @@
 diff --git a/kernel/power/drot.c b/kernel/power/drot.c
-index 951c2f9c..98788c0f 100644
+index 3229878e..a25ccceb 100644
 --- a/kernel/power/drot.c
 +++ b/kernel/power/drot.c
 @@ -37,8 +37,6 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
@@ -8,11 +8,11 @@ index 951c2f9c..98788c0f 100644
  
 -#pragma GCC optimize "O1"
 -
- #if defined(POWER8) || defined(POWER9) || defined(POWER10)
  #if defined(__VEC__) || defined(__ALTIVEC__)
+ #if defined(POWER8) || defined(POWER9)
  #include "drot_microk_power8.c"
 diff --git a/kernel/power/srot.c b/kernel/power/srot.c
-index a53342f6..73b477d9 100644
+index 5a0d4b12..d73fafc9 100644
 --- a/kernel/power/srot.c
 +++ b/kernel/power/srot.c
 @@ -37,8 +37,6 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
@@ -21,11 +21,11 @@ index a53342f6..73b477d9 100644
  
 -#pragma GCC optimize "O1"
 -
- #if defined(POWER8) || defined(POWER9) || defined(POWER10)
  #if defined(__VEC__) || defined(__ALTIVEC__)
+ #if defined(POWER8) || defined(POWER9)
  #include "srot_microk_power8.c"
 diff --git a/kernel/power/zscal.c b/kernel/power/zscal.c
-index 5526f4d6..3c2efbfa 100644
+index 59ddc149..a5e35001 100644
 --- a/kernel/power/zscal.c
 +++ b/kernel/power/zscal.c
 @@ -36,8 +36,6 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
@@ -34,6 +34,6 @@ index 5526f4d6..3c2efbfa 100644
  
 -#pragma GCC optimize "O1"
 -
- #if defined(POWER8) || defined(POWER9) || defined(POWER10)
  #if defined(__VEC__) || defined(__ALTIVEC__)
+ #if defined(POWER8) || defined(POWER9)
  #if defined(DOUBLE)
diff --git a/SOURCES/openblas-0.3.12-system-lapack.patch b/SOURCES/openblas-0.3.15-system-lapack.patch
similarity index 100%
rename from SOURCES/openblas-0.3.12-system-lapack.patch
rename to SOURCES/openblas-0.3.15-system-lapack.patch
diff --git a/SOURCES/openblas-0.3.12-tests.patch b/SOURCES/openblas-0.3.15-tests.patch
similarity index 92%
rename from SOURCES/openblas-0.3.12-tests.patch
rename to SOURCES/openblas-0.3.15-tests.patch
index 0bd9864..ac71c39 100644
--- a/SOURCES/openblas-0.3.12-tests.patch
+++ b/SOURCES/openblas-0.3.15-tests.patch
@@ -1,8 +1,8 @@
 diff --git a/Makefile b/Makefile
-index a9af62a2..2f0f11c0 100644
+index 555d1c46..7dc74273 100644
 --- a/Makefile
 +++ b/Makefile
-@@ -138,13 +138,13 @@ tests :
+@@ -144,13 +144,13 @@ tests :
  ifeq ($(NOFORTRAN), $(filter 0,$(NOFORTRAN)))
  	touch $(LIBNAME)
  ifndef NO_FBLAS
diff --git a/SPECS/openblas.spec b/SPECS/openblas.spec
index d1d590f..02e74ce 100644
--- a/SPECS/openblas.spec
+++ b/SPECS/openblas.spec
@@ -1,6 +1,6 @@
 %bcond_with system_lapack
 # Version of bundled lapack
-%global lapackver 3.9.0
+%global lapackver 3.9.1
 
 # DO NOT "CLEAN UP" OR MODIFY THIS SPEC FILE WITHOUT ASKING THE
 # MAINTAINER FIRST!
@@ -14,7 +14,7 @@
 # "obsoleted" features are still kept in the spec.
 
 Name:           openblas
-Version:        0.3.12
+Version:        0.3.15
 Release:        1%{?dist}
 Summary:        An optimized BLAS library based on GotoBLAS2
 Group:          Development/Libraries
@@ -22,20 +22,22 @@ License:        BSD
 URL:            https://github.com/xianyi/OpenBLAS/
 Source0:        https://github.com/xianyi/OpenBLAS/archive/v%{version}.tar.gz
 # Use system lapack
-Patch0:         openblas-0.3.12-system-lapack.patch
+Patch0:         openblas-0.3.15-system-lapack.patch
 # Drop extra p from threaded library name
-Patch1:         openblas-0.3.12-libname.patch
+Patch1:         openblas-0.3.15-libname.patch
 # Supply the proper flags to the test makefile
-Patch2:         openblas-0.3.12-tests.patch
+Patch2:         openblas-0.3.15-tests.patch
 # Enable optimizations for all LAPACK sources
-Patch3:         openblas-0.3.12-noopt.patch
+Patch3:         openblas-0.3.15-noopt.patch
 # Pass ASMFLAGS to assembler compiler
-Patch4:         openblas-0.3.12-asmflags.patch
+Patch4:         openblas-0.3.15-asmflags.patch
 # Remove optimization pragmas on ppc64le
-Patch5:         openblas-0.3.12-power-optimize.patch
+Patch5:         openblas-0.3.15-power-optimize.patch
 
-BuildRequires:  gcc
-BuildRequires:  gcc-gfortran
+BuildRequires:  scl-utils
+BuildRequires:  gcc-toolset-11-gcc
+BuildRequires:  gcc-toolset-11-gcc-gfortran
+BuildRequires:  gcc-toolset-11-annobin-plugin-gcc
 BuildRequires:  perl-devel
 BuildRequires:  multilib-rpm-config
 
@@ -336,6 +338,9 @@ rm -rf netliblapack64
 %endif
 
 %build
+# Enable gcc-toolset-11
+source scl_source enable gcc-toolset-11
+
 %if !%{lapacke}
 LAPACKE="NO_LAPACKE=1"
 %endif
@@ -675,6 +680,11 @@ rm -rf %{buildroot}%{_libdir}/pkgconfig
 %endif
 
 %changelog
+* Wed Sep 15 2021 Nikola Forró <nforro@redhat.com> - 0.3.15-1
+- Rebase to version 0.3.15
+- Use gcc-toolset-11 to benefit from POWER 10 optimizations
+  resolves: #1983218
+
 * Wed Oct 28 2020 Nikola Forró <nforro@redhat.com> - 0.3.12-1
 - Rebase to version 0.3.12
   related: #1847435