diff --git a/configure.ac b/configure.ac
index 67063e9..b3c25ad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,9 @@ AM_INIT_AUTOMAKE([foreign dist-xz subdir-objects])
 AC_TYPE_SSIZE_T
 
 XCB_UTIL_M4_WITH_INCLUDE_PATH
-XCB_UTIL_COMMON([1.4], [1.6])
+XCB_REQUIRED=1.4
+XCB_UTIL_COMMON([$XCB_REQUIRED], [1.6])
+AC_SUBST(XCB_REQUIRED, 1.4)
 
 AM_PATH_PYTHON([3.9])
 
diff --git a/xcb-errors.pc.in b/xcb-errors.pc.in
index 422b821..47342e7 100644
--- a/xcb-errors.pc.in
+++ b/xcb-errors.pc.in
@@ -7,6 +7,6 @@ xcbproto_version=@XCBPROTO_VERSION@
 Name: XCB errors library
 Description: XCB errors utility library
 Version: @PACKAGE_VERSION@
-Requires: xcb
+Requires: xcb >= @XCB_REQUIRED@
 Libs: -L${libdir} -lxcb-errors
 Cflags: -I${includedir}