diff --git a/src/cmd/distpack/pack.go b/src/cmd/distpack/pack.go
index 09c3a33119..53e9dbd73b 100644
--- a/src/cmd/distpack/pack.go
+++ b/src/cmd/distpack/pack.go
@@ -113,6 +113,7 @@ func main() {
 		".gitattributes",
 		".github/**",
 		".gitignore",
+		".jj/**",
 		"VERSION.cache",
 		"misc/cgo/*/_obj/**",
 		"**/.DS_Store",
diff --git a/src/cmd/distpack/test.go b/src/cmd/distpack/test.go
index 7479bd77f5..7fd2dad57b 100644
--- a/src/cmd/distpack/test.go
+++ b/src/cmd/distpack/test.go
@@ -30,6 +30,7 @@ var srcRules = []testRule{
 	{name: "go/.git", exclude: true},
 	{name: "go/.gitattributes", exclude: true},
 	{name: "go/.github", exclude: true},
+	{name: "go/.jj", exclude: true},
 	{name: "go/VERSION.cache", exclude: true},
 	{name: "go/bin/**", exclude: true},
 	{name: "go/pkg/**", exclude: true},
@@ -48,6 +49,7 @@ var zipRules = []testRule{
 	{name: "go/.git", exclude: true},
 	{name: "go/.gitattributes", exclude: true},
 	{name: "go/.github", exclude: true},
+	{name: "go/.jj", exclude: true},
 	{name: "go/VERSION.cache", exclude: true},
 	{name: "go/bin", exclude: true},
 	{name: "go/pkg", exclude: true},
@@ -84,6 +86,7 @@ var modRules = []testRule{
 	{name: "golang.org/toolchain@*/.git", exclude: true},
 	{name: "golang.org/toolchain@*/.gitattributes", exclude: true},
 	{name: "golang.org/toolchain@*/.github", exclude: true},
+	{name: "golang.org/toolchain@*/.jj", exclude: true},
 	{name: "golang.org/toolchain@*/VERSION.cache", exclude: true},
 	{name: "golang.org/toolchain@*/bin", exclude: true},
 	{name: "golang.org/toolchain@*/pkg", exclude: true},