diff --git a/.gitignore b/.gitignore
index 30f4dc4..dedd5f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@ uget-1.5.9.3.tar.gz
 /uget-2.0.3.tar.gz
 /uget-2.0.4.tar.gz
 /uget-2.0.5.tar.gz
+/uget-2.0.6.tar.gz
diff --git a/sources b/sources
index 87d3187..5e010b9 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-19665a85890a8db7d785ded404f96780  uget-2.0.5.tar.gz
+601866969f88c8762be2f6b8d9649dc9  uget-2.0.6.tar.gz
diff --git a/uget.spec b/uget.spec
index fda6102..74ca993 100644
--- a/uget.spec
+++ b/uget.spec
@@ -1,4 +1,4 @@
-%global	mainver	2.0.5
+%global	mainver	2.0.6
 #%%global	minorver	
 
 Name:		uget
@@ -33,6 +33,9 @@ be inherited by each download in that category.
 %prep
 %setup -q -n %{name}-%{mainver}
 
+%global optflags_orig %optflags
+%global optflags %optflags -Werror=implicit-function-declaration
+
 %build
 
 %configure \
@@ -82,6 +85,9 @@ exit 0
 %{_datadir}/pixmaps/%{name}/logo.png
 
 %changelog
+* Fri Apr 08 2016 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.0.6-1
+- 2.0.6
+
 * Tue Feb  9 2016 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.0.5-1
 - 2.0.5