diff --git a/ql/src/codeql_ql/ast/Ast.qll b/ql/src/codeql_ql/ast/Ast.qll
index cc876063333..f650dd122c2 100644
--- a/ql/src/codeql_ql/ast/Ast.qll
+++ b/ql/src/codeql_ql/ast/Ast.qll
@@ -2382,8 +2382,6 @@ module YAML {
   // to not expose the entire `File` API on `QlPack`.
   private newtype TQLPack = MKQlPack(File file) { file.getBaseName() = "qlpack.yml" }
 
-  YAMLEntry test() { not result.isRoot() }
-
   /**
    * A `qlpack.yml` file.
    */
diff --git a/ql/test/callgraph/callgraph.expected b/ql/test/callgraph/callgraph.expected
index 11bbcc896d1..ec7362a187e 100644
--- a/ql/test/callgraph/callgraph.expected
+++ b/ql/test/callgraph/callgraph.expected
@@ -1,3 +1,4 @@
+getTarget
 | Foo.qll:5:26:5:30 | PredicateCall | Foo.qll:3:1:3:26 | ClasslessPredicate foo |
 | Foo.qll:10:21:10:25 | PredicateCall | Foo.qll:8:3:8:28 | ClassPredicate bar |
 | Foo.qll:14:30:14:40 | MemberCall | Foo.qll:10:3:10:27 | ClassPredicate baz |
@@ -8,3 +9,7 @@
 | Foo.qll:31:5:31:12 | PredicateCall | Foo.qll:24:3:24:32 | ClasslessPredicate alias0 |
 | Foo.qll:36:36:36:65 | MemberCall | file://:0:0:0:0 | replaceAll |
 | Foo.qll:38:39:38:67 | MemberCall | file://:0:0:0:0 | regexpCapture |
+| packs/src/SrcThing.qll:4:3:4:8 | PredicateCall | packs/lib/LibThing/Foo.qll:1:1:1:30 | ClasslessPredicate foo |
+| packs/src/SrcThing.qll:5:3:5:8 | PredicateCall | packs/src/SrcThing.qll:8:1:8:30 | ClasslessPredicate bar |
+dependsOn
+| packs/src/qlpack.yml:1:1:1:4 | ql-testing-src-pack | packs/lib/qlpack.yml:1:1:1:4 | ql-testing-lib-pack |
diff --git a/ql/test/callgraph/callgraph.ql b/ql/test/callgraph/callgraph.ql
index 4b68e49e361..9ff79048b84 100644
--- a/ql/test/callgraph/callgraph.ql
+++ b/ql/test/callgraph/callgraph.ql
@@ -1,3 +1,5 @@
 import ql
 
 query AstNode getTarget(Call call) { result = call.getTarget() }
+
+query YAML::QLPack dependsOn(YAML::QLPack pack) { result = pack.getADependency() }
diff --git a/ql/test/callgraph/packs/lib/LibThing/Foo.qll b/ql/test/callgraph/packs/lib/LibThing/Foo.qll
new file mode 100644
index 00000000000..56454a95557
--- /dev/null
+++ b/ql/test/callgraph/packs/lib/LibThing/Foo.qll
@@ -0,0 +1 @@
+predicate foo(int i) { i = 3 }
diff --git a/ql/test/callgraph/packs/lib/qlpack.yml b/ql/test/callgraph/packs/lib/qlpack.yml
new file mode 100644
index 00000000000..92e83d1e3d8
--- /dev/null
+++ b/ql/test/callgraph/packs/lib/qlpack.yml
@@ -0,0 +1,3 @@
+name: ql-testing-lib-pack
+version: 0.1.0
+extractor: ql-test-stuff
\ No newline at end of file
diff --git a/ql/test/callgraph/packs/src/SrcThing.qll b/ql/test/callgraph/packs/src/SrcThing.qll
new file mode 100644
index 00000000000..77c812235d9
--- /dev/null
+++ b/ql/test/callgraph/packs/src/SrcThing.qll
@@ -0,0 +1,8 @@
+import LibThing.Foo
+
+query predicate test(int i) {
+  foo(i) and
+  bar(i)
+}
+
+predicate bar(int i) { i = 4 }
diff --git a/ql/test/callgraph/packs/src/qlpack.yml b/ql/test/callgraph/packs/src/qlpack.yml
new file mode 100644
index 00000000000..dcf148fe721
--- /dev/null
+++ b/ql/test/callgraph/packs/src/qlpack.yml
@@ -0,0 +1,4 @@
+name: ql-testing-src-pack
+version: 0.1.0
+dependencies: 
+  ql-testing-lib-pack: "*"
\ No newline at end of file
diff --git a/tools/qltest.cmd b/tools/qltest.cmd
index 374810e3804..2573d4f929e 100644
--- a/tools/qltest.cmd
+++ b/tools/qltest.cmd
@@ -4,6 +4,8 @@ type NUL && "%CODEQL_DIST%\codeql.exe" database index-files ^
     --prune=**/*.testproj ^
     --include-extension=.ql ^
     --include-extension=.qll ^
+    --include-extension=.dbscheme ^
+    --include-extension=.yml ^
     --size-limit=5m ^
     --language=ql ^
     "%CODEQL_EXTRACTOR_QL_WIP_DATABASE%"
diff --git a/tools/qltest.sh b/tools/qltest.sh
index 19547bfa5df..3712b2a5a10 100755
--- a/tools/qltest.sh
+++ b/tools/qltest.sh
@@ -6,6 +6,8 @@ exec "${CODEQL_DIST}/codeql" database index-files \
     --prune="**/*.testproj" \
     --include-extension=.ql \
     --include-extension=.qll \
+    --include-extension=.dbscheme \
+    --include-extension=.yml \
     --size-limit=5m \
     --language=ql \
     --working-dir=.\