diff --git a/Cargo.lock b/Cargo.lock
index f1ca2ef..83f5015 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -470,9 +470,9 @@ checksum = "09d6582e104315a817dff97f75133544b2e094ee22447d2acf4a74e189ba06fc"
 
 [[package]]
 name = "libm"
-version = "0.2.13"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9627da5196e5d8ed0b0495e61e518847578da83483c37288316d9b2e03a7f72"
+checksum = "f9fbbcab51052fe104eb5e5d351cf728d30a5be1fe14d9be8a3b097481fb97de"
 
 [[package]]
 name = "light-curve-dmdt"
diff --git a/light-curve-dmdt/Cargo.toml b/light-curve-dmdt/Cargo.toml
index 6c9fe80..9bda25e 100644
--- a/light-curve-dmdt/Cargo.toml
+++ b/light-curve-dmdt/Cargo.toml
@@ -26,7 +26,7 @@ conv = "0.3.3"
 embed-doc-image = { version = "0.1.4", optional = true }
 enum_dispatch = "0.3.12"
 itertools = "0.14"
-libm = "0.2.13" # erf
+libm = "0.2.15" # erf
 ndarray = "0.16.1"
 num-traits = "0.2.14"
 png = { version = "0.17.16", optional = true }