diff --git a/.gitignore b/.gitignore
index 79b529c..255538b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /psqlodbc-10.03.0000.tar.gz
+/psqlodbc-12.01.0000.tar.gz
diff --git a/postgresql-odbc.spec b/postgresql-odbc.spec
index 329d563..cc92263 100644
--- a/postgresql-odbc.spec
+++ b/postgresql-odbc.spec
@@ -4,8 +4,8 @@
 
 Name: postgresql-odbc
 Summary: PostgreSQL ODBC driver
-Version: 10.03.0000
-Release: 5%{?dist}
+Version: 12.01.0000
+Release: 1%{?dist}
 License: LGPLv2+
 URL: https://odbc.postgresql.org/
 
@@ -42,7 +42,9 @@ EOF
 
 %build
 %configure --with-unixodbc --disable-dependency-tracking
-make %{?_smp_mflags}
+# GCC 10 defaults to -fno-common
+# https://gcc.gnu.org/gcc-10/changes.html (see C section)
+make %{?_smp_mflags} CFLAGS="%{optflags} -fcommon"
 
 
 %install
@@ -64,7 +66,9 @@ popd
 %check
 %postgresql_tests_run
 
-cd test && make installcheck %{_smp_mflags} || {
+# GCC 10 defaults to -fno-common
+# https://gcc.gnu.org/gcc-10/changes.html (see C section)
+cd test && make installcheck %{_smp_mflags} CFLAGS="%{optflags} -fcommon" || {
 	echo "=== trying to find all regression.diffs files in build directory ==="
 	find -name regression.diffs | while read line; do
 		cat "$line"
@@ -105,6 +109,9 @@ the PostgreSQL unixODBC driver.
 
 
 %changelog
+* Mon Mar 09 2020 Patrik Novotný <panovotn@redhat.com> - 12.01.0000-1
+- Rebase to upstream release 12.01.0000
+
 * Thu Jan 30 2020 Fedora Release Engineering <releng@fedoraproject.org> - 10.03.0000-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild
 
diff --git a/sources b/sources
index f9df460..060476f 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (psqlodbc-10.03.0000.tar.gz) = c8d2322a4e97d0312eb822cd8533931a87b808fa9686754ebaea09b433f53b5cfec7572bd19ec0a8797ffb5d83aa0a83aa802af7a97a8e1b0ae4453042bb7867
+SHA512 (psqlodbc-12.01.0000.tar.gz) = 857cc1069e4947cd54593125a71e6fa48f8476bbbb6078dc03edfbeadbe24562edb28f6d3f83eaa7d86346910c9084505cef52cbd03a0ba47ce1139b3ea6aa56