diff --git a/diffrpms b/diffrpms
new file mode 100755
index 0000000..ff1709b
--- /dev/null
+++ b/diffrpms
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+if [ "$#" != 2 ]; then
+    cat<<EOM
+Usage: $(basename $0) OLD_RELEASE NEW_RELEASE
+
+Compares corresponding RPM packages produced in OLD_RELASE and NEW_RELEASE.
+The same version strings are assumed.
+EOM
+    exit 1;
+fi
+
+OLD_RELEASE="$1"
+NEW_RELEASE="$2"
+
+function process_dir() {
+    for F in $(ls $1/* | sed -r 's/-[0-9].*//' | sort | uniq ); do
+        OLD_RPM=$(echo ${F}-[0-9]*-${OLD_RELEASE}.*)
+        NEW_RPM=$(echo ${F}-[0-9]*-${NEW_RELEASE}.*)
+        
+        test \( ! -e "$OLD_RPM" \) -a \( ! -e "$NEW_RPM" \) && continue
+        if [ ! -e "$OLD_RPM" ]; then echo "+ Package ${F}"; fi
+        if [ ! -e "$NEW_RPM" ]; then echo "- Package ${F}"; fi
+
+        DIFF=$(rpmdiff -i S -i 5 -i T "$OLD_RPM" "$NEW_RPM" | \
+            grep -vE 'REQUIRES perl = | REQUIRES rpmlib\(' )
+
+        test -n "$DIFF" && printf '* %s:\n%s\n' "$F" "$DIFF"
+    done
+}
+
+process_dir 'x86_64'
+process_dir 'noarch'