diff --git a/ci/fpm.toml b/ci/fpm.toml
index 6e40ddbac..53f529fad 100644
--- a/ci/fpm.toml
+++ b/ci/fpm.toml
@@ -7,3 +7,4 @@ copyright = "2019-2021 stdlib contributors"
 
 [dev-dependencies]
 test-drive.git = "https://github.com/fortran-lang/test-drive"
+test-drive.rev = "6f56c059c26715eab56f0ac85b400c1a6007fb88"
diff --git a/src/tests/Makefile.manual b/src/tests/Makefile.manual
index c77e32b4f..a92d99461 100644
--- a/src/tests/Makefile.manual
+++ b/src/tests/Makefile.manual
@@ -9,7 +9,7 @@ FETCH = curl -L
 all test:: $(LIB)
 
 testdrive.F90:
-	$(FETCH) https://github.com/fortran-lang/test-drive/raw/main/src/testdrive.F90 > $@
+	$(FETCH) https://github.com/fortran-lang/test-drive/raw/6f56c059c26715eab56f0ac85b400c1a6007fb88/src/testdrive.F90 > $@
 
 all test clean::
 	$(MAKE) -f Makefile.manual --directory=ascii $@