diff --git a/arpack-install-arpackicb_h.patch b/arpack-install-arpackicb_h.patch
new file mode 100644
index 0000000..ef2757b
--- /dev/null
+++ b/arpack-install-arpackicb_h.patch
@@ -0,0 +1,12 @@
+diff -up src/Makefile.am.icb src/Makefile.am
+--- src/Makefile.am.icb	2020-12-07 11:40:45.000000000 +0100
++++ src/Makefile.am	2021-09-02 23:55:29.346733967 +0200
+@@ -1,7 +1,7 @@
+ ACLOCAL_AMFLAGS = -I m4
+ 
+ pkgincludedir = $(includedir)/arpack
+-pkginclude_HEADERS = debug.h stat.h arpackdef.h
++pkginclude_HEADERS = debug.h stat.h arpackdef.h arpackicb.h
+ 
+ AM_DISTCHECK_CONFIGURE_FLAGS =
+ if MPI
diff --git a/arpack.spec b/arpack.spec
index 7fe6629..a2f2438 100644
--- a/arpack.spec
+++ b/arpack.spec
@@ -20,12 +20,14 @@
 
 Name:		arpack
 Version:	3.8.0
-Release:	1%{dist}
+Release:	2%{dist}
 Summary:	Fortran 77 subroutines for solving large scale eigenvalue problems
 
 License:	BSD
 URL:		https://github.com/opencollab/arpack-ng
 Source0:	https://github.com/opencollab/arpack-ng/archive/%{version}/arpack-ng-%{version}.tar.gz
+# https://bugzilla.redhat.com/show_bug.cgi?id=1990366
+Patch0:         arpack-install-arpackicb_h.patch
 
 BuildRequires:	gcc-c++
 BuildRequires:	gcc-gfortran
@@ -92,6 +94,7 @@ library and so links used for building arpack based applications.
 %setup -qc
 mv arpack-ng-%{version} src
 pushd src
+%patch0 -p1
 autoreconf -vif
 popd
 %if %{build64}
@@ -192,6 +195,9 @@ popd
 
 
 %changelog
+* Thu Sep 02 2021 Dominik Mierzejewski <rpm@greysector.net> - 3.8.0-2
+- ensure arpackicb.h is installed (#1990366)
+
 * Wed Jun 02 2021 Dominik Mierzejewski <rpm@greysector.net> - 3.8.0-1
 - update to 3.8.0 (#1905263)
 - drop obsolete patches