diff --git a/.travis.yml.script b/.travis.yml.script
index 5e7680a3..3e32aaec 100755
--- a/.travis.yml.script
+++ b/.travis.yml.script
@@ -11,10 +11,10 @@ fi
 declare -A versions
 versions[binutils]=2.28.1
 versions[gcc]=7.2.0
-versions[musl]=1.1.17
+versions[musl]=1.1.18
 versions[gmp]=6.1.2
 versions[mpc]=1.0.3
-versions[mpfr]=3.1.5
+versions[mpfr]=3.1.6
 versions[isl]=0.18
 versions[linux]=4.4.10
 
diff --git a/hashes/mpfr-3.1.6.tar.bz2.sha1 b/hashes/mpfr-3.1.6.tar.bz2.sha1
new file mode 100644
index 00000000..fe881355
--- /dev/null
+++ b/hashes/mpfr-3.1.6.tar.bz2.sha1
@@ -0,0 +1 @@
+c207aada1c0af969d800c16f25e0a78e15b9c9cc  mpfr-3.1.6.tar.bz2
diff --git a/hashes/musl-1.1.18.tar.gz.sha1 b/hashes/musl-1.1.18.tar.gz.sha1
new file mode 100644
index 00000000..15c0461d
--- /dev/null
+++ b/hashes/musl-1.1.18.tar.gz.sha1
@@ -0,0 +1 @@
+d4e2949afbcdd1d543703bc1728f01bff2f85560  musl-1.1.18.tar.gz