diff --git a/Cargo.lock b/Cargo.lock
index 960b7ffb..60b68e76 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1892,9 +1892,9 @@ dependencies = [
 
 [[package]]
 name = "pulldown-cmark"
-version = "0.10.2"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0530d13d87d1f549b66a3e8d0c688952abe5994e204ed62615baaf25dc029c"
+checksum = "76979bea66e7875e7509c4ec5300112b316af87fa7a252ca91c448b32dfe3993"
 dependencies = [
  "bitflags 2.4.1",
  "memchr",
@@ -2184,18 +2184,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.198"
+version = "1.0.199"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9846a40c979031340571da2545a4e5b7c4163bdae79b301d5f86d03979451fcc"
+checksum = "0c9f6e76df036c77cd94996771fb40db98187f096dd0b9af39c6c6e452ba966a"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.198"
+version = "1.0.199"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e88edab869b01783ba905e7d0153f9fc1a6505a96e4ad3018011eedb838566d9"
+checksum = "11bd257a6541e141e42ca6d24ae26f7714887b47e89aa739099104c7e4d3b7fc"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/mdbook-course/Cargo.toml b/mdbook-course/Cargo.toml
index fc809b3c..71ea35c5 100644
--- a/mdbook-course/Cargo.toml
+++ b/mdbook-course/Cargo.toml
@@ -17,6 +17,6 @@ matter = "0.1.0-alpha4"
 mdbook = "0.4.37"
 pretty_env_logger = "0.5.0"
 regex = "1.10"
-serde = "1.0.198"
+serde = "1.0.199"
 serde_json = "1.0.116"
 serde_yaml = "0.9"
diff --git a/mdbook-exerciser/Cargo.toml b/mdbook-exerciser/Cargo.toml
index b1c51c3e..0e7a36b4 100644
--- a/mdbook-exerciser/Cargo.toml
+++ b/mdbook-exerciser/Cargo.toml
@@ -12,4 +12,4 @@ anyhow = "1.0.82"
 log = "0.4.21"
 mdbook = "0.4.37"
 pretty_env_logger = "0.5.0"
-pulldown-cmark = { version = "0.10.2", default-features = false }
+pulldown-cmark = { version = "0.10.3", default-features = false }