diff --git a/zbar.spec b/zbar.spec
index 2c9fb56..628c5d1 100644
--- a/zbar.spec
+++ b/zbar.spec
@@ -44,7 +44,7 @@ Code 93, Code 39, Codabar, Interleaved 2 of 5, QR Code and SQ Code.
 %package devel
 Summary: Bar code library extra development files
 Requires: pkgconfig
-Requires: %{name}-libs = %{version}-%{release}
+Requires: %{name}-libs%{_isa} = %{version}-%{release}
 
 %description devel
 This package contains header files and additional libraries used for
@@ -58,7 +58,7 @@ This package contains the ZBar Bar Code Reader library.
 
 %package gtk
 Summary: Bar code reader GTK widget
-Requires: %{name}-libs = %{version}-%{release}
+Requires: %{name}-libs%{_isa} = %{version}-%{release}
 # Obsoleted in F37
 Obsoletes: %{name}-gi < %{version}-%{release}
 
@@ -68,8 +68,8 @@ applications based on GTK+-2.0.
 
 %package gtk-devel
 Summary: Bar code reader GTK widget extra development files
-Requires: %{name}-devel = %{version}-%{release}
-Requires: %{name}-gtk = %{version}-%{release}
+Requires: %{name}-devel%{_isa} = %{version}-%{release}
+Requires: %{name}-gtk%{_isa} = %{version}-%{release}
 Requires: pkgconfig
 
 %description gtk-devel
@@ -79,7 +79,7 @@ scanning widget.
 
 %package qt
 Summary: Bar code reader Qt widget
-Requires: %{name}-libs = %{version}-%{release}
+Requires: %{name}-libs%{_isa} = %{version}-%{release}
 
 %description qt
 This package contains a bar code scanning widget for use with GUI
@@ -87,8 +87,8 @@ applications based on Qt4.
 
 %package qt-devel
 Summary: Bar code reader Qt widget extra development files
-Requires: %{name}-devel = %{version}-%{release}
-Requires: %{name}-qt = %{version}-%{release}
+Requires: %{name}-devel%{_isa} = %{version}-%{release}
+Requires: %{name}-qt%{_isa} = %{version}-%{release}
 Requires: pkgconfig
 
 %description qt-devel
@@ -98,7 +98,7 @@ scanning widget.
 
 %package python3
 Summary: Bar code reader PyGTK widget
-Requires: %{name}-libs = %{version}-%{release}
+Requires: %{name}-libs%{_isa} = %{version}-%{release}
 Requires: python3-pillow
 
 %description python3
@@ -108,8 +108,8 @@ python applications that work with images.
 %if %{JAVA}
 %package java
 Summary: Bar code reader Java library
-Requires: %{name}-devel = %{version}-%{release}
-Requires: %{name}-gtk = %{version}-%{release}
+Requires: %{name}-devel%{_isa} = %{version}-%{release}
+Requires: %{name}-gtk%{_isa} = %{version}-%{release}
 Requires: pkgconfig
 
 %description java
@@ -223,6 +223,7 @@ rm -rf $RPM_BUILD_ROOT/usr/share/doc/zbar-%{version}/
 - Sort BuildRequires and Requires and split them out one per line
 - Move GObject Introspection bindings to -gtk and -gtk-devel subpackages
 - Split libzbar out to zbar-libs subpackage
+- Tighten subpackage deps with %%{_isa}
 
 * Mon Aug 01 2022 Gwyn Ciesla <gwync@protonmail.com> - 0.23.90-4
 - Only build Java on supported platforms.