diff --git a/README.md b/README.md
index d800382..2d77667 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Squiggle.c
 
-A self-contained C99 library that provides a subset of [Squiggle](https://www.squiggle-language.com/)'s functionality in C.
+A self-contained C99 library that provides a subset of [Squiggle](https://www.squiggle-language.com/)'s functionality in C. It should be fast, but at the margin, simplicity of implementation wins over speed.
 
 ## Why C?
 
@@ -79,6 +79,8 @@ Behaviour on error can be toggled by the `EXIT_ON_ERROR` variable. This library
 
 ## To do list
 
+- [ ] Explain correlated samples
+- [ ] Add tests in Stan?
 - [ ] Have some more complicated & realistic example
 - [ ] Add summarization functions: 90% ci (or all c.i.?) 
 - [ ] Systematize references
diff --git a/examples/01_one_sample/example b/examples/01_one_sample/example
index bc04f21..ce80991 100755
Binary files a/examples/01_one_sample/example and b/examples/01_one_sample/example differ
diff --git a/examples/01_one_sample/example.c b/examples/01_one_sample/example.c
index 337b9ce..4badc5e 100644
--- a/examples/01_one_sample/example.c
+++ b/examples/01_one_sample/example.c
@@ -39,6 +39,7 @@ int main(){
 
     float result_one = sample_mixture(samplers, weights, n_dists, seed);
 		printf("result_one: %f\n", result_one);
+		free(seed);
 }
 
 /* 
diff --git a/examples/02_many_samples/example b/examples/02_many_samples/example
index 423e787..6bc060e 100755
Binary files a/examples/02_many_samples/example and b/examples/02_many_samples/example differ
diff --git a/examples/02_many_samples/example.c b/examples/02_many_samples/example.c
index 7d44ab3..c77a17c 100644
--- a/examples/02_many_samples/example.c
+++ b/examples/02_many_samples/example.c
@@ -48,6 +48,7 @@ int main(){
 		  printf("%.2f, ", result_many[i]);
 		}
 		printf("]\n");
+		free(seed);
 }
 
 /* 
diff --git a/examples/03_gcc_nested_function/example b/examples/03_gcc_nested_function/example
index 84e2593..ef1f7ac 100755
Binary files a/examples/03_gcc_nested_function/example and b/examples/03_gcc_nested_function/example differ
diff --git a/examples/03_gcc_nested_function/example.c b/examples/03_gcc_nested_function/example.c
index 354d8f9..7d1a0b5 100644
--- a/examples/03_gcc_nested_function/example.c
+++ b/examples/03_gcc_nested_function/example.c
@@ -33,5 +33,6 @@ int main(){
 		  printf("%.2f, ", result_many[i]);
 		}
 		printf("]\n");
+		free(seed);
 }
 
diff --git a/examples/04_sample_from_cdf_simple/example b/examples/04_sample_from_cdf_simple/example
index 61fd198..97dc565 100755
Binary files a/examples/04_sample_from_cdf_simple/example and b/examples/04_sample_from_cdf_simple/example differ
diff --git a/examples/05_sample_from_cdf_beta/example b/examples/05_sample_from_cdf_beta/example
index 4bc0554..7f3c14e 100755
Binary files a/examples/05_sample_from_cdf_beta/example and b/examples/05_sample_from_cdf_beta/example differ
diff --git a/squiggle.h b/squiggle.h
index 84d95eb..31eb537 100644
--- a/squiggle.h
+++ b/squiggle.h
@@ -17,6 +17,9 @@ float sample_normal(float mean, float sigma, uint32_t* seed);
 float sample_lognormal(float logmean, float logsigma, uint32_t* seed);
 float sample_to(float low, float high, uint32_t* seed);
 
+float sample_gamma(float alpha, uint32_t* seed);
+float sample_beta(float a, float b, uint32_t* seed);
+
 // Array helpers
 float array_sum(float* array, int length);
 void array_cumsum(float* array_to_sum, float* array_cumsummed, int length);