diff --git a/Cargo.lock b/Cargo.lock
index d92898e1c..459979037 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -44,17 +44,31 @@ dependencies = [
  "anstyle",
  "anstyle-parse",
  "anstyle-query",
- "anstyle-wincon",
+ "anstyle-wincon 1.0.1",
  "colorchoice",
  "is-terminal",
  "utf8parse",
 ]
 
+[[package]]
+name = "anstream"
+version = "0.6.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e2e1ebcb11de5c03c67de28a7df593d32191b44939c482e97702baaaa6ab6a5"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon 3.0.2",
+ "colorchoice",
+ "utf8parse",
+]
+
 [[package]]
 name = "anstyle"
-version = "1.0.0"
+version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41ed9a86bf92ae6580e0a31281f65a1b1d867c0cc68d5346e2ae128dddfa6a7d"
+checksum = "8901269c6307e8d93993578286ac0edf7f195079ffff5ebdeea6a59ffb7e36bc"
 
 [[package]]
 name = "anstyle-parse"
@@ -84,6 +98,16 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cd54b81ec8d6180e24654d0b371ad22fc3dd083b6ff8ba325b72e00c87660a7"
+dependencies = [
+ "anstyle",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.71"
@@ -119,6 +143,12 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bitflags"
+version = "2.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed570934406eb16438a4e976b1b4500774099c13b8cb96eec99f620f05090ddf"
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -186,7 +216,7 @@ checksum = "a0610544180c38b88101fecf2dd634b174a62eef6946f84dfc6a7127512b381c"
 dependencies = [
  "ansi_term",
  "atty",
- "bitflags",
+ "bitflags 1.3.2",
  "strsim 0.8.0",
  "textwrap",
  "unicode-width",
@@ -208,7 +238,7 @@ version = "4.3.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f2763db829349bf00cfc06251268865ed4363b93a943174f638daf3ecdba2cd"
 dependencies = [
- "anstream",
+ "anstream 0.3.2",
  "anstyle",
  "clap_lex",
  "once_cell",
@@ -353,6 +383,16 @@ version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
 
+[[package]]
+name = "env_filter"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a009aa4810eb158359dda09d0c87378e4bbb89b5a801f016885a4707ba24f7ea"
+dependencies = [
+ "log",
+ "regex",
+]
+
 [[package]]
 name = "env_logger"
 version = "0.10.0"
@@ -366,6 +406,19 @@ dependencies = [
  "termcolor",
 ]
 
+[[package]]
+name = "env_logger"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05e7cf40684ae96ade6232ed84582f40ce0a66efcd43a5117aef610534f8e0b8"
+dependencies = [
+ "anstream 0.6.11",
+ "anstyle",
+ "env_filter",
+ "humantime",
+ "log",
+]
+
 [[package]]
 name = "epub"
 version = "2.1.1"
@@ -597,6 +650,20 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "handlebars"
+version = "5.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab283476b99e66691dee3f1640fea91487a8d81f50fb5ecc75538f8f8879a1e4"
+dependencies = [
+ "log",
+ "pest",
+ "pest_derive",
+ "serde",
+ "serde_json",
+ "thiserror",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -791,22 +858,21 @@ dependencies = [
 
 [[package]]
 name = "mdbook"
-version = "0.4.36"
+version = "0.4.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80992cb0e05f22cc052c99f8e883f1593b891014b96a8b4637fd274d7030c85e"
+checksum = "0c33564061c3c640bed5ace7d6a2a1b65f2c64257d1ac930c15e94ed0fb561d3"
 dependencies = [
  "anyhow",
  "chrono",
  "clap 4.3.12",
  "clap_complete",
- "env_logger",
- "handlebars",
+ "env_logger 0.11.1",
+ "handlebars 5.1.0",
  "log",
  "memchr",
  "once_cell",
  "opener",
- "pathdiff",
- "pulldown-cmark",
+ "pulldown-cmark 0.10.0",
  "regex",
  "serde",
  "serde_json",
@@ -818,20 +884,20 @@ dependencies = [
 
 [[package]]
 name = "mdbook-epub"
-version = "0.4.36"
+version = "0.4.37"
 dependencies = [
  "const_format",
- "env_logger",
+ "env_logger 0.10.0",
  "epub",
  "epub-builder",
  "eyre",
- "handlebars",
+ "handlebars 4.3.7",
  "html_parser",
  "log",
  "mdbook",
  "mime_guess",
  "mockall",
- "pulldown-cmark",
+ "pulldown-cmark 0.9.3",
  "semver",
  "serde",
  "serde_derive",
@@ -977,12 +1043,6 @@ dependencies = [
  "windows-targets 0.48.0",
 ]
 
-[[package]]
-name = "pathdiff"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8835116a5c179084a830efb3adc117ab007512b535bc1a21c991d3b32a6b44dd"
-
 [[package]]
 name = "percent-encoding"
 version = "2.3.0"
@@ -1114,12 +1174,30 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77a1a2f1f0a7ecff9c31abbe177637be0e97a0aef46cf8738ece09327985d998"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "getopts",
  "memchr",
  "unicase",
 ]
 
+[[package]]
+name = "pulldown-cmark"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dce76ce678ffc8e5675b22aa1405de0b7037e2fdf8913fea40d1926c6fe1e6e7"
+dependencies = [
+ "bitflags 2.4.2",
+ "memchr",
+ "pulldown-cmark-escape",
+ "unicase",
+]
+
+[[package]]
+name = "pulldown-cmark-escape"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5d8f9aa0e3cbcfaf8bf00300004ee3b72f74770f9cbac93f6928771f613276b"
+
 [[package]]
 name = "quote"
 version = "1.0.31"
@@ -1172,7 +1250,7 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -1228,7 +1306,7 @@ version = "0.37.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acf8729d8542766f1b2cf77eb034d52f40d375bb8b615d0b147089946e16613d"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "errno",
  "io-lifetimes",
  "libc",
@@ -1345,9 +1423,9 @@ dependencies = [
 
 [[package]]
 name = "shlex"
-version = "1.1.0"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "slab"
@@ -1836,6 +1914,15 @@ dependencies = [
  "windows-targets 0.48.0",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.0",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.2"
@@ -1866,6 +1953,21 @@ dependencies = [
  "windows_x86_64_msvc 0.48.0",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a18201040b24831fbb9e4eb208f8892e1f50a37feb53cc7ff887feb8f50e7cd"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.0",
+ "windows_aarch64_msvc 0.52.0",
+ "windows_i686_gnu 0.52.0",
+ "windows_i686_msvc 0.52.0",
+ "windows_x86_64_gnu 0.52.0",
+ "windows_x86_64_gnullvm 0.52.0",
+ "windows_x86_64_msvc 0.52.0",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.42.2"
@@ -1878,6 +1980,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7764e35d4db8a7921e09562a0304bf2f93e0a51bfccee0bd0bb0b666b015ea"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.2"
@@ -1890,6 +1998,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbaa0368d4f1d2aaefc55b6fcfee13f41544ddf36801e793edbbfd7d7df075ef"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.2"
@@ -1902,6 +2016,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a28637cb1fa3560a16915793afb20081aba2c92ee8af57b4d5f28e4b3e7df313"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.2"
@@ -1914,6 +2034,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffe5e8e31046ce6230cc7215707b816e339ff4d4d67c65dffa206fd0f7aa7b9a"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.2"
@@ -1926,6 +2052,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d6fa32db2bc4a2f5abeacf2b69f7992cd09dca97498da74a151a3132c26befd"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
@@ -1938,6 +2070,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a657e1e9d3f514745a572a6846d3c7aa7dbe1658c056ed9c3344c4109a6949e"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.2"
@@ -1950,6 +2088,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dff9641d1cd4be8d1a070daf9e3773c5f67e78b4d9d42263020c057706765c04"
+
 [[package]]
 name = "xml-rs"
 version = "0.8.14"
diff --git a/Cargo.toml b/Cargo.toml
index 33f75b3f0..3b1cad0fa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 authors = ["Michael Bryan <michaelfbryan@gmail.com>"]
 description = "An EPUB renderer for mdbook."
 name = "mdbook-epub"
-version = "0.4.36"
+version = "0.4.37"
 readme = "README.md"
 license = "MIT"
 repository = "https://github.com/Michael-F-Bryan/mdbook-epub"
@@ -35,7 +35,7 @@ structopt = "0.3.26"
 mime_guess = "2.0"
 env_logger = "0.10.0"
 log = "0.4.17"
-mdbook = { version = "0.4.36", default-features = false }
+mdbook = { version = "0.4.37", default-features = false }
 handlebars = "4.3.7"
 toml = "0.5.11" # downgraded due to parent 'mdbook' dependency and error there
 html_parser = "0.7.0"