diff --git a/Makefile b/Makefile
index e1d76dca..da19cb8d 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,7 @@ CFLAGS += -DSRAND
 endif
 
 TESTS = \
-	tests/func/test_c99 \
+	tests/func/test_c11 \
 	tests/func/test_container_composing \
 	tests/func/test_deq \
 	tests/func/test_lst \
@@ -108,7 +108,7 @@ examples/postfix:                    ALWAYS; $(CC)  $(CFLAGS) $@.c  -o $@
 examples/json:                       ALWAYS; $(CC)  $(CFLAGS) $@.c  -o $@
 examples/snow:                       ALWAYS; $(CC)  $(CFLAGS) $@.c  -o $@
 examples/6502:                       ALWAYS; $(CC)  $(CFLAGS) $@.c  -o $@
-tests/func/test_c99:                 ALWAYS; $(CC)  $(CFLAGS) $@.c  -o $@
+tests/func/test_c11:                 ALWAYS; $(CC)  $(CFLAGS) $@.c  -o $@
 tests/func/test_container_composing: ALWAYS; $(CXX) $(CFLAGS) $@.cc -o $@
 tests/func/test_deq:                 ALWAYS; $(CXX) $(CFLAGS) $@.cc -o $@
 tests/func/test_lst:                 ALWAYS; $(CXX) $(CFLAGS) $@.cc -o $@
diff --git a/README.md b/README.md
index 5d9c18b4..53840f29 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
 # C TEMPLATE LIBRARY (CTL)
 
-CTL is a fast compiling, type safe, header only, template-like library for ISO C99.
+CTL is a fast compiling, type safe, header only, template-like library for ISO C11.
 
 ## Motivation
 
-CTL aims to improve C99 developer productivity by implementing the following
-STL containers in ISO C99:
+CTL aims to improve C11 developer productivity by implementing the following
+STL containers in ISO C11:
 
 ```
 deq.h = std::deque
@@ -74,7 +74,7 @@ type type_copy(type*);
 Forgetting a declaration will print a human-readable error message:
 
 ```shell
-tests/test_c99.c:11:11: error: ‘type_free’ undeclared (first use in this function)
+tests/test_c11.c:11:11: error: ‘type_free’ undeclared (first use in this function)
    11 | #define T type
 ```
 
diff --git a/gen_images.sh b/gen_images.sh
index 612dc89a..c1fc3bce 100644
--- a/gen_images.sh
+++ b/gen_images.sh
@@ -110,5 +110,5 @@ perf_graph \
 perf_compile_two_bar \
     'compile.log' \
     "CTL vs STL Compilation ($CFLAGS) ($VERSION)" \
-    'tests/perf/perf_compile_c99.c' \
+    'tests/perf/perf_compile_c11.c' \
     'tests/perf/perf_compile_cc.cc'
diff --git a/images/compile.log.png b/images/compile.log.png
index 6f322a8d..cd2fff0f 100644
Binary files a/images/compile.log.png and b/images/compile.log.png differ
diff --git a/images/deq.log.png b/images/deq.log.png
index 2fb95274..bb99b922 100644
Binary files a/images/deq.log.png and b/images/deq.log.png differ
diff --git a/images/lst.log.png b/images/lst.log.png
index ca6c115a..75d0fbef 100644
Binary files a/images/lst.log.png and b/images/lst.log.png differ
diff --git a/images/pqu.log.png b/images/pqu.log.png
index 941cbc9f..39d423c3 100644
Binary files a/images/pqu.log.png and b/images/pqu.log.png differ
diff --git a/images/set.log.png b/images/set.log.png
index c3a3c280..10c2624f 100644
Binary files a/images/set.log.png and b/images/set.log.png differ
diff --git a/images/vec.log.png b/images/vec.log.png
index dc2b2c78..419d148d 100644
Binary files a/images/vec.log.png and b/images/vec.log.png differ
diff --git a/tests/func/test_c99.c b/tests/func/test_c11.c
similarity index 100%
rename from tests/func/test_c99.c
rename to tests/func/test_c11.c
diff --git a/tests/perf/perf_compile_c99.c b/tests/perf/perf_compile_c11.c
similarity index 100%
rename from tests/perf/perf_compile_c99.c
rename to tests/perf/perf_compile_c11.c