diff --git a/openexr.spec b/openexr.spec
index 8ffbd0e..9d4ad13 100644
--- a/openexr.spec
+++ b/openexr.spec
@@ -19,6 +19,7 @@
 # perhaps you want to build against corresponding ilmbase build
 %define asan_build  0
 %define debug_build 0
+%define sonum 24
 %global so_suffix -2_3-24
 # tests should run at least during local build
 # but do expect a HUGE number of memory, so beware
@@ -41,6 +42,14 @@ BuildRequires:  gcc-c++
 BuildRequires:  pkgconfig
 BuildRequires:  pkgconfig(IlmBase) >= 2.2.0
 BuildRequires:  pkgconfig(zlib)
+%if %{asan_build} || %{debug_build}
+BuildRequires:  ilmbase-debugsource
+BuildRequires:  libHalf%{sonum}-debuginfo
+BuildRequires:  libIex%{so_suffix}-debuginfo
+BuildRequires:  libIexMath%{so_suffix}-debuginfo
+BuildRequires:  libIlmThread%{so_suffix}-debuginfo
+BuildRequires:  libImath%{so_suffix}-debuginfo
+%endif
 Obsoletes:      OpenEXR <= 1.6.1
 Provides:       OpenEXR = %{version}