diff --git a/Cargo.lock b/Cargo.lock
index 5a8a2e1..8be544f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -77,9 +77,9 @@ dependencies = [
 
 [[package]]
 name = "async-trait"
-version = "0.1.38"
+version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e1a4a2f97ce50c9d0282c1468816208588441492b40d813b2e0419c22c05e7f"
+checksum = "687c230d85c0a52504709705fc8a53e4a692b83a2184f03dae73e38e1e93a783"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -155,9 +155,9 @@ checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
 
 [[package]]
 name = "cc"
-version = "1.0.59"
+version = "1.0.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66120af515773fb005778dc07c261bd201ec8ce50bd6e7144c927753fe013381"
+checksum = "ef611cc68ff783f18535d77ddd080185275713d852c4f5cbb6122c462a7a825c"
 
 [[package]]
 name = "cfg-if"
@@ -200,6 +200,15 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "cmake"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e56268c17a6248366d66d4a47a3381369d068cce8409bb1716ed77ea32163bb"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "const-random"
 version = "0.1.8"
@@ -216,7 +225,7 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25e4c606eb459dd29f7c57b2e0879f2b6f14ee130918c2b78ccb58a9624e6c7a"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.15",
  "proc-macro-hack",
 ]
 
@@ -309,9 +318,9 @@ checksum = "134951f4028bdadb9b84baf4232681efbf277da25144b9b0ad65df75946c422b"
 
 [[package]]
 name = "either"
-version = "1.6.0"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd56b59865bce947ac5958779cfa508f6c3b9497cc762b7e24a12d11ccde2c4f"
+checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
 
 [[package]]
 name = "encoding_rs"
@@ -447,8 +456,8 @@ dependencies = [
 
 [[package]]
 name = "futures-locks"
-version = "0.5.1-pre"
-source = "git+https://github.com/asomers/futures-locks#c380ff6ef44ee77f502b4feec2a83cb2dbae99cb"
+version = "0.6.1-pre"
+source = "git+https://github.com/asomers/futures-locks#908226deac658e020436e54d66680ff736e5a2b4"
 dependencies = [
  "futures 0.3.5",
 ]
@@ -512,9 +521,9 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.1.14"
+version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
+checksum = "fc587bc0ec293155d5bfa6b9891ec18a1e330c234f896ea47fbada4cadbe47e6"
 dependencies = [
  "cfg-if",
  "libc",
@@ -522,6 +531,17 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee8025cf36f917e6a52cce185b7c7177689b838b7ec138364e50cc2277a56cf4"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
 [[package]]
 name = "gloo-timers"
 version = "0.2.1"
@@ -556,12 +576,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.8.2"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e91b62f79061a0bc2e046024cb7ba44b08419ed238ecbd9adbd787434b9e8c25"
-dependencies = [
- "autocfg",
-]
+checksum = "00d63df3d41950fb462ed38308eea019113ad1508da725bbedcd0fa5a85ef5f7"
 
 [[package]]
 name = "heck"
@@ -574,9 +591,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.15"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3deed196b6e7f9e44a2ae8d94225d80302d81208b1bb673fd21fe634645c85a9"
+checksum = "4c30f6d0bc6b00693347368a67d41b58f2fb851215ff1da49e90fe2c5c667151"
 dependencies = [
  "libc",
 ]
@@ -614,6 +631,12 @@ version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cd179ae861f0c2e53da70d892f5f3029f9594be0c41dc5269cd371691b1dc2f9"
 
+[[package]]
+name = "httpdate"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "494b4d60369511e7dea41cf646832512a94e542f68bb9c49e54518e0f468eb47"
+
 [[package]]
 name = "humantime"
 version = "1.3.0"
@@ -625,9 +648,9 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.13.7"
+version = "0.13.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e68a8dd9716185d9e64ea473ea6ef63529252e3e27623295a0378a19665d5eb"
+checksum = "2f3afcfae8af5ad0576a31e768415edb627824129e8e5a29b8bfccb2f234e835"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -637,10 +660,10 @@ dependencies = [
  "http",
  "http-body",
  "httparse",
+ "httpdate",
  "itoa",
  "pin-project",
  "socket2",
- "time",
  "tokio",
  "tower-service",
  "tracing",
@@ -673,9 +696,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.5.1"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b45e59b16c76b11bf9738fd5d38879d3bd28ad292d7b313608becb17ae2df9"
+checksum = "55e2e4c765aa53a0424761bf9f41aa7a6ac1efa87238f59560640e27fca028f2"
 dependencies = [
  "autocfg",
  "hashbrown",
@@ -692,10 +715,11 @@ dependencies = [
 
 [[package]]
 name = "instant"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b141fdc7836c525d4d594027d318c84161ca17aaf8113ab1f81ab93ae897485"
+checksum = "63312a18f7ea8760cdd0a7c5aac1a619752a246b833545e3e36d1f81f7cd9e66"
 dependencies = [
+ "cfg-if",
  "js-sys",
  "time",
  "wasm-bindgen",
@@ -734,9 +758,9 @@ checksum = "dc6f3ad7b9d11a0c00842ff8de1b60ee58661048eb8049ed33c73594f359d7e6"
 
 [[package]]
 name = "js-sys"
-version = "0.3.44"
+version = "0.3.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85a7e2c92a4804dd459b86c339278d0fe87cf93757fae222c3fa3ae75458bc73"
+checksum = "ca059e81d9486668f12d455a4ea6daa600bd408134cd17e3d3fb5a32d1f016f8"
 dependencies = [
  "wasm-bindgen",
 ]
@@ -781,9 +805,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.76"
+version = "0.2.77"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "755456fae044e6fa1ebbbd1b3e902ae19e73097ed4ed87bb79934a867c007bc3"
+checksum = "f2f96b10ec2560088a8e76961b00d47107b3a625fecb76dedb29ee7ccbf98235"
 
 [[package]]
 name = "libsqlite3-sys"
@@ -890,7 +914,7 @@ version = "0.1.0"
 source = "git+https://github.com/matrix-org/matrix-rust-sdk?rev=master#6872cc717b8b7746ea4c4bec8d143e8653f965ed"
 dependencies = [
  "assign",
- "futures-locks 0.5.1-pre",
+ "futures-locks 0.6.1-pre",
  "instant",
  "js_int",
  "ruma",
@@ -1019,9 +1043,9 @@ dependencies = [
 
 [[package]]
 name = "net2"
-version = "0.2.34"
+version = "0.2.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ba7c918ac76704fb42afcbbb43891e72731f3dcca3bef2a19786297baf14af7"
+checksum = "3ebc3ec692ed7c9a255596c67808dee269f64655d8baf7b4f0638e51ba1d6853"
 dependencies = [
  "cfg-if",
  "libc",
@@ -1051,10 +1075,10 @@ dependencies = [
 
 [[package]]
 name = "olm-rs"
-version = "0.6.0"
-source = "git+https://gitlab.gnome.org/jhaye/olm-rs/#af483ef1715c3071fcd6da4958ee2216288b1e14"
+version = "1.0.0"
+source = "git+https://gitlab.gnome.org/jhaye/olm-rs/#69df675ccb90982eb28f78dfc191c943a42fa211"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.0",
  "olm-sys",
  "serde",
  "serde_json",
@@ -1063,9 +1087,12 @@ dependencies = [
 
 [[package]]
 name = "olm-sys"
-version = "0.2.0"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38da14ca5e2ca81f3c0a91f0bf7cade30ec256f162f8be6929a26bbfca065bb1"
+checksum = "5bf083a66a6b86db09dac0e31bd5dc20ffe3d5677375bb4133ae3d0fd813354f"
+dependencies = [
+ "cmake",
+]
 
 [[package]]
 name = "once_cell"
@@ -1179,9 +1206,9 @@ checksum = "eba180dafb9038b050a4c280019bbedf9f2467b61e5d892dcad585bb57aadc5a"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.19"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04f5f085b5d71e2188cb8271e5da0161ad52c3f227a661a3c135fdf28e258b12"
+checksum = "e4b93dba1818d32e781f9d008edd577bab215e83ef50e8a1ddf1ad301b19a09f"
 dependencies = [
  "unicode-xid",
 ]
@@ -1207,7 +1234,7 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.15",
  "libc",
  "rand_chacha",
  "rand_core",
@@ -1230,7 +1257,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.15",
 ]
 
 [[package]]
@@ -1254,7 +1281,7 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "de0737333e7a9502c789a36d7c7fa6092a49895d4faa31ca5df163857ded2e9d"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.15",
  "redox_syscall",
  "rust-argon2",
 ]
@@ -1627,18 +1654,18 @@ checksum = "f638d531eccd6e23b980caf34876660d38e265409d8e99b397ab71eb3612fad0"
 
 [[package]]
 name = "serde"
-version = "1.0.115"
+version = "1.0.116"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e54c9a88f2da7238af84b5101443f0c0d0a3bbdc455e34a5c9497b1903ed55d5"
+checksum = "96fe57af81d28386a513cbc6858332abc6117cfdb5999647c6444b8f43a370a5"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.115"
+version = "1.0.116"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "609feed1d0a73cc36a0182a840a9b37b4a82f0b1150369f0536a9e3f2a31dc48"
+checksum = "f630a6370fd8e457873b4bd2ffdae75408bc291ba72be773772a4c2a065d9ae8"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1686,9 +1713,9 @@ checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 
 [[package]]
 name = "socket2"
-version = "0.3.12"
+version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03088793f677dce356f3ccc2edb1b314ad191ab702a5de3faf49304f7e104918"
+checksum = "b1fa70dc5c8104ec096f4fe7ede7a221d35ae13dcd19ba1ad9a81d2cab9a1c44"
 dependencies = [
  "cfg-if",
  "libc",
@@ -1698,9 +1725,9 @@ dependencies = [
 
 [[package]]
 name = "sqlformat"
-version = "0.1.0"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ce64a4576e1720a2e511bf3ccdb8c0f6cfed0fc265bcbaa0bd369485e02c631"
+checksum = "f699301eec598ffd6c39832cca1416381ea459ac73c506f6ca74c8750fb52969"
 dependencies = [
  "lazy_static",
  "maplit",
@@ -1811,9 +1838,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.39"
+version = "1.0.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "891d8d6567fe7c7f8835a3a98af4208f3846fba258c1bc3c31d6e506239f11f9"
+checksum = "6690e3e9f692504b941dc6c3b188fd28df054f7fb8469ab40680df52fdcc842b"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1999,9 +2026,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.15"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f0e00789804e99b20f12bc7003ca416309d28a6f495d6af58d1e2c2842461b5"
+checksum = "5bcf46c1f1f06aeea2d6b81f3c863d0930a596c86ad1920d4e5bad6dd1d7119a"
 dependencies = [
  "lazy_static",
 ]
@@ -2123,9 +2150,9 @@ checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.67"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0563a9a4b071746dd5aedbc3a28c6fe9be4586fb3fbadb67c400d4f53c6b16c"
+checksum = "1ac64ead5ea5f05873d7c12b545865ca2b8d28adfc50a49b84770a3a97265d42"
 dependencies = [
  "cfg-if",
  "serde",
@@ -2135,9 +2162,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.67"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc71e4c5efa60fb9e74160e89b93353bc24059999c0ae0fb03affc39770310b0"
+checksum = "f22b422e2a757c35a73774860af8e112bff612ce6cb604224e8e47641a9e4f68"
 dependencies = [
  "bumpalo",
  "lazy_static",
@@ -2150,9 +2177,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.17"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95f8d235a77f880bcef268d379810ea6c0af2eacfa90b1ad5af731776e0c4699"
+checksum = "b7866cab0aa01de1edf8b5d7936938a7e397ee50ce24119aef3e1eaa3b6171da"
 dependencies = [
  "cfg-if",
  "js-sys",
@@ -2162,9 +2189,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.67"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97c57cefa5fa80e2ba15641578b44d36e7a64279bc5ed43c6dbaf329457a2ed2"
+checksum = "6b13312a745c08c469f0b292dd2fcd6411dba5f7160f593da6ef69b64e407038"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -2172,9 +2199,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.67"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "841a6d1c35c6f596ccea1f82504a192a60378f64b3bb0261904ad8f2f5657556"
+checksum = "f249f06ef7ee334cc3b8ff031bfc11ec99d00f34d86da7498396dc1e3b1498fe"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2185,15 +2212,15 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.67"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93b162580e34310e5931c4b792560108b10fd14d64915d7fff8ff00180e70092"
+checksum = "1d649a3145108d7d3fbcde896a468d1bd636791823c9921135218ad89be08307"
 
 [[package]]
 name = "web-sys"
-version = "0.3.44"
+version = "0.3.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dda38f4e5ca63eda02c059d243aa25b5f35ab98451e518c51612cd0f1bd19a47"
+checksum = "4bf6ef87ad7ae8008e15a355ce696bed26012b7caa21605188cfd8214ab51e2d"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -2263,18 +2290,18 @@ dependencies = [
 
 [[package]]
 name = "zeroize"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cbac2ed2ba24cc90f5e06485ac8c7c1e5449fe8911aef4d8877218af021a5b8"
+checksum = "05f33972566adbd2d3588b0491eb94b98b43695c4ef897903470ede4f3f5a28a"
 dependencies = [
  "zeroize_derive",
 ]
 
 [[package]]
 name = "zeroize_derive"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de251eec69fc7c1bc3923403d18ececb929380e016afe103da75f396704f8ca2"
+checksum = "c3f369ddb18862aba61aa49bf31e74d29f0f162dec753063200e1dc084345d16"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index c4c99a0..b2bbcc7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "chronicle-dicebot"
-version = "0.5.0"
+version = "0.5.2"
 authors = ["Taylor C. Richberger <taywee@gmx.com>", "projectmoon <projectmoon@agnos.is>"]
 edition = "2018"
 license = 'MIT'
@@ -25,6 +25,7 @@ indoc = "1.0"
 
 # The versioning of the matrix SDK follows its Cargo.toml. The SDK and
 # macros are on master, but it imports the common and base from 0.1.0.
+# https://github.com/matrix-org/matrix-rust-sdk/blob/master/matrix_sdk/Cargo.toml
 matrix-sdk = { git = "https://github.com/matrix-org/matrix-rust-sdk", rev = "master" }
 matrix-sdk-common-macros = { git = "https://github.com/matrix-org/matrix-rust-sdk", rev = "master" }
 matrix-sdk-common = { git = "https://github.com/matrix-org/matrix-rust-sdk", rev = "0.1.0" }
diff --git a/Dockerfile b/Dockerfile
index cf38637..41ca695 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,8 @@
-# Builder image
+# Builder image with development dependencies.
 FROM bougyman/voidlinux:glibc as builder
-RUN xbps-install -Sy base-devel libressl-devel wget gnupg rustup
-RUN rustup-init -qy
+RUN xbps-install -Sy base-devel rust cargo cmake wget gnupg
+RUN xbps-install -Sy libressl-devel olm-devel libstdc++-devel
+#RUN rustup-init -qy
 
 # Install tini for signal processing and zombie killing
 ENV TINI_VERSION v0.18.0
@@ -18,14 +19,16 @@ RUN set -eux; \
 	tini --version
 
 # Build dicebot
+# OLM is temporarily built with dynamic linking due to a bug in
+# olm-sys: https://gitlab.gnome.org/BrainBlasted/olm-sys/-/issues/6
 RUN mkdir -p /root/src
 WORKDIR /root/src
 ADD . ./
-RUN . /root/.cargo/env && cargo build --release
+RUN OLM_LINK_VARIANT=dylib cargo build --release
 
 # Final image
 FROM bougyman/voidlinux:latest
-RUN xbps-install -Sy ca-certificates libstdc++
+RUN xbps-install -Sy ca-certificates libstdc++ olm
 COPY --from=builder \
     /root/src/target/release/dicebot \
     /usr/local/bin/
diff --git a/README.md b/README.md
index b94be6a..7f35185 100644
--- a/README.md
+++ b/README.md
@@ -40,13 +40,20 @@ the Docker image](#docker-image).
 ### Build from Source
 
 Precompiled executables are not yet available. Clone this repository
-and run `cargo install`.
+and run `OLM_LINK_VARIANT=dylib cargo install`.
 
 Building the project requires:
 
+* Basic build environment (`build-essential` on Ubuntu, `base-devel`
+  on Void and Arch, etc).
 * Rust 1.45.0 or higher.
 * OpenSSL/LibreSSL development headers installed.
-* glibc (probably)
+* `olm-sys` crate dependencies: cmake, libstdc++, libolm and its
+  development headers.
+* glibc.
+
+Note: The `olm-sys` crate must be built in dynamic linking mode until
+a [bug][1] in its build process is fixed.
 
 #### Why doesn't it build on musl libc?
 
@@ -144,3 +151,5 @@ The most basic plans are:
   would need a sheet service.
 * Automation of Docker builds and precompiled binaries.
 * Use environment variables instead of config file in Docker image.
+
+[1]: https://gitlab.gnome.org/BrainBlasted/olm-sys/-/issues/6