diff --git a/Net/samples/Mail/Makefile b/Net/samples/Mail/Makefile
index dd587be40..b6650c4a4 100644
--- a/Net/samples/Mail/Makefile
+++ b/Net/samples/Mail/Makefile
@@ -12,6 +12,6 @@ objects = Mail
 
 target         = Mail
 target_version = 1
-target_libs    = PocoUtil PocoNet PocoXML PocoFoundation
+target_libs    = PocoUtil PocoNet PocoXML PocoJSON PocoFoundation
 
 include $(POCO_BASE)/build/rules/exec
diff --git a/Net/samples/dict/Makefile b/Net/samples/dict/Makefile
index 79f107608..ffebcc876 100644
--- a/Net/samples/dict/Makefile
+++ b/Net/samples/dict/Makefile
@@ -12,6 +12,6 @@ objects = dict
 
 target         = dict
 target_version = 1
-target_libs    = PocoUtil PocoNet PocoXML PocoFoundation
+target_libs    = PocoUtil PocoNet PocoXML PocoJSON PocoFoundation
 
 include $(POCO_BASE)/build/rules/exec
diff --git a/Net/samples/download/Makefile b/Net/samples/download/Makefile
index 57ed7df7c..286765ac6 100644
--- a/Net/samples/download/Makefile
+++ b/Net/samples/download/Makefile
@@ -12,6 +12,6 @@ objects = download
 
 target         = download
 target_version = 1
-target_libs    = PocoUtil PocoNet PocoXML PocoFoundation
+target_libs    = PocoUtil PocoNet PocoXML PocoJSON PocoFoundation
 
 include $(POCO_BASE)/build/rules/exec
diff --git a/Net/samples/httpget/Makefile b/Net/samples/httpget/Makefile
index e590f6548..5682c16d9 100644
--- a/Net/samples/httpget/Makefile
+++ b/Net/samples/httpget/Makefile
@@ -12,6 +12,6 @@ objects = httpget
 
 target         = httpget
 target_version = 1
-target_libs    = PocoUtil PocoNet PocoXML PocoFoundation
+target_libs    = PocoUtil PocoNet PocoXML PocoJSON PocoFoundation
 
 include $(POCO_BASE)/build/rules/exec