diff --git a/.gitmodules b/.gitmodules
index 9317a32956edc..94158709d174c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "pglite/pgvector"]
 	path = pglite/vector
 	url = https://github.com/pgvector/pgvector.git
+[submodule "pglite/pgtap"]
+	path = pglite/pgtap
+	url = https://github.com/theory/pgtap.git
diff --git a/pglite/Makefile b/pglite/Makefile
index fc1f84c45bdc1..f6bc99b8e50cc 100644
--- a/pglite/Makefile
+++ b/pglite/Makefile
@@ -5,7 +5,8 @@ include $(top_builddir)/src/Makefile.global
 
 SUBDIRS = \
 		pg_ivm \
-		vector
+		vector \
+		pgtap
 
 prefix ?= /install/pglite
 EXTENSIONS_BUILD_ROOT := /tmp/extensions/build
diff --git a/pglite/pgtap b/pglite/pgtap
new file mode 160000
index 0000000000000..6e3acbf4e0cb1
--- /dev/null
+++ b/pglite/pgtap
@@ -0,0 +1 @@
+Subproject commit 6e3acbf4e0cb19997edeafeabf1b18870ea68a5e