diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index 12d461e..9544756 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -13,4 +13,4 @@
 	"unwantedRecommendations": [
     "rust-lang.rust"
 	]
-}
\ No newline at end of file
+}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea459e1..2ecdd68 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ changes, see Git history.
 Each release is tagged in Git and on the Docker repository
 [`scottlamb/moonfire-nvr`](https://hub.docker.com/r/scottlamb/moonfire-nvr).
 
+## unreleased
+
+*   use Retina 0.4.1, which is compatible with rtsp-simple-server v0.19.3.
+
 ## 0.7.5 (2022-05-09)
 
 *   [#219](https://github.com/scottlamb/moonfire-nvr/issues/219): fix
diff --git a/server/Cargo.lock b/server/Cargo.lock
index 2d5e9f6..5958e7e 100644
--- a/server/Cargo.lock
+++ b/server/Cargo.lock
@@ -627,7 +627,7 @@ checksum = "d39cd93900197114fa1fcb7ae84ca742095eed9442088988ae74fa744e930e77"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "wasi 0.10.0+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -651,7 +651,7 @@ dependencies = [
  "indexmap",
  "slab",
  "tokio",
- "tokio-util",
+ "tokio-util 0.6.9",
  "tracing",
 ]
 
@@ -990,14 +990,15 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.8.0"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba272f85fa0b41fc91872be579b3bbe0f56b792aa361a380eb669469f68dafb2"
+checksum = "52da4364ffb0e4fe33a9841a98a3f3014fb964045ce4f7a45a398243c8d6b0c9"
 dependencies = [
  "libc",
  "log",
  "miow",
  "ntapi",
+ "wasi 0.11.0+wasi-snapshot-preview1",
  "winapi",
 ]
 
@@ -1427,9 +1428,9 @@ checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
 [[package]]
 name = "pretty-hex"
-version = "0.2.1"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc5c99d529f0d30937f6f4b8a86d988047327bb88d04d2c4afc356de74722131"
+checksum = "c6fa0831dd7cc608c38a5e323422a0077678fa5744aa2be4ad91c4ece8eec8d5"
 
 [[package]]
 name = "proc-macro-error"
@@ -1654,9 +1655,9 @@ dependencies = [
 
 [[package]]
 name = "retina"
-version = "0.4.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57bdeafed8d429e892754895f028852e666cdf77c3fb248c3780d70606e3e2c7"
+checksum = "35edba0fc81d60f9ac4d69afaa640b150d761e0a3982c1381d7929139306ef06"
 dependencies = [
  "base64",
  "bitreader",
@@ -1676,7 +1677,7 @@ dependencies = [
  "thiserror",
  "time 0.1.44",
  "tokio",
- "tokio-util",
+ "tokio-util 0.7.3",
  "url",
 ]
 
@@ -2027,7 +2028,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
 dependencies = [
  "libc",
- "wasi",
+ "wasi 0.10.0+wasi-snapshot-preview1",
  "winapi",
 ]
 
@@ -2059,10 +2060,11 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.17.0"
+version = "1.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2af73ac49756f3f7c01172e34a23e5d0216f6c32333757c2c61feb2bbff5a5ee"
+checksum = "7a8325f63a7d4774dd041e363b2409ed1c5cbbd0f867795e661df066b2b0a581"
 dependencies = [
+ "autocfg",
  "bytes",
  "libc",
  "memchr",
@@ -2125,6 +2127,20 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-util"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc463cd8deddc3770d20f9852143d50bf6094e640b485cb2e189a2099085ff45"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "pin-project-lite",
+ "tokio",
+ "tracing",
+]
+
 [[package]]
 name = "toml"
 version = "0.5.8"
@@ -2306,6 +2322,12 @@ version = "0.10.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
 
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.79"
diff --git a/server/db/Cargo.toml b/server/db/Cargo.toml
index 76885eb..328a8a3 100644
--- a/server/db/Cargo.toml
+++ b/server/db/Cargo.toml
@@ -32,7 +32,7 @@ nix = "0.23.0"
 num-rational = { version = "0.4.0", default-features = false, features = ["std"] }
 odds = { version = "0.4.0", features = ["std-vec"] }
 parking_lot = "0.12.0"
-pretty-hex = "0.2.1"
+pretty-hex = "0.3.0"
 protobuf = "3.0"
 ring = "0.16.2"
 rusqlite = "0.27.0"