diff --git a/test/integration-test.sh b/test/integration-test.sh
index bf45ca7..6749251 100755
--- a/test/integration-test.sh
+++ b/test/integration-test.sh
@@ -114,6 +114,31 @@ check "dry-run detects stale SKILL.md" \
 check "regenerate fixes staleness" \
   "$IDSTACK_DIR/bin/idstack-gen-skills && $IDSTACK_DIR/bin/idstack-gen-skills --dry-run"
 
+echo ""
+
+# --- idstack-learnings-delete ---
+echo "## idstack-learnings-delete"
+
+check "returns error if no arguments provided" \
+  "! $IDSTACK_DIR/bin/idstack-learnings-delete"
+
+check "returns error if no file exists" \
+  "rm -f .idstack/learnings.jsonl && ! $IDSTACK_DIR/bin/idstack-learnings-delete somekey"
+
+# Setup data for delete tests
+$IDSTACK_DIR/bin/idstack-learnings-log '{"skill":"test","type":"fact","key":"key1","insight":"one"}'
+$IDSTACK_DIR/bin/idstack-learnings-log '{"skill":"test","type":"fact","key":"key2","insight":"two"}'
+$IDSTACK_DIR/bin/idstack-learnings-log '{"skill":"test","type":"fact","key":"key1","insight":"three"}'
+
+check "returns error if key not found" \
+  "! $IDSTACK_DIR/bin/idstack-learnings-delete missingkey"
+
+check "deletes the most recent entry with the key when there are duplicates" \
+  "$IDSTACK_DIR/bin/idstack-learnings-delete key1 && python3 -c \"import json,sys; lines=[json.loads(l) for l in open('.idstack/learnings.jsonl')]; assert len(lines)==2 and lines[0]['key']=='key1' and lines[0]['insight']=='one' and lines[1]['key']=='key2'\""
+
+check "deletes a specific learning" \
+  "$IDSTACK_DIR/bin/idstack-learnings-delete key2 && python3 -c \"import json,sys; lines=[json.loads(l) for l in open('.idstack/learnings.jsonl')]; assert len(lines)==1 and lines[0]['key']=='key1'\""
+
 echo ""
 echo "Results: $PASS/$TOTAL passed, $FAIL failed"
 [ "$FAIL" -eq 0 ] && exit 0 || exit 1