diff --git a/modules.scm b/modules.scm
index a576d663..96367f56 100644
--- a/modules.scm
+++ b/modules.scm
@@ -40,6 +40,7 @@
 (import scheme
 	chicken.base
 	chicken.internal
+	chicken.format
 	chicken.keyword
 	chicken.platform
 	chicken.syntax
diff --git a/rules.make b/rules.make
index 7abb455f..79201017 100644
--- a/rules.make
+++ b/rules.make
@@ -505,6 +505,7 @@ $(eval $(call declare-emitted-import-lib-dependency,chicken.random,extras))
 $(eval $(call declare-emitted-import-lib-dependency,chicken.locative,lolevel))
 $(eval $(call declare-emitted-import-lib-dependency,chicken.memory,lolevel))
 $(eval $(call declare-emitted-import-lib-dependency,chicken.memory.representation,lolevel))
+$(eval $(call declare-emitted-import-lib-dependency,chicken.number-vector,srfi-4))
 $(eval $(call declare-emitted-import-lib-dependency,chicken.sort,data-structures))
 $(eval $(call declare-emitted-import-lib-dependency,chicken.string,data-structures))
 $(eval $(call declare-emitted-import-lib-dependency,scheme.write,r7lib))
@@ -629,6 +630,7 @@ support.c: support.scm mini-srfi-1.scm \
 		chicken.time.import.scm
 modules.c: modules.scm \
 		chicken.internal.import.scm \
+		chicken.format.import.scm \
 		chicken.keyword.import.scm \
 		chicken.base.import.scm \
 		chicken.syntax.import.scm \