diff --git a/Cargo.toml b/Cargo.toml
index a9f80375..358de0aa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,16 +18,13 @@ rustc_version = "0.1.7"
 
 [dependencies]
 chrono = "0.3"
-clap = "2.19.3"
+clap = "2.23"
 error-chain = "0.8.1"
 nickel = "0.9.0"
-slog = "1.4.0"
-slog-scope = "0.2.2"
-slog-term = "1.3.4"
-time = "0.1.35"
+time = "0.1"
 
 [dependencies.rusqlite]
-version = "0.10.1"
+version = "0.11"
 # System sqlite might be very old.
 features = ["bundled", "limits"]
 
diff --git a/db/Cargo.toml b/db/Cargo.toml
index b0deae04..b83e49a5 100644
--- a/db/Cargo.toml
+++ b/db/Cargo.toml
@@ -5,13 +5,13 @@ workspace = ".."
 
 [dependencies]
 error-chain = "0.8.1"
-itertools = "0.5.9"
-lazy_static = "0.2.2"
-ordered-float = "0.4.0"
-time = "0.1.35"
+itertools = "0.5"
+lazy_static = "0.2"
+ordered-float = "0.4"
+time = "0.1"
 
 [dependencies.rusqlite]
-version = "0.10.1"
+version = "0.11"
 # System sqlite might be very old.
 features = ["bundled", "limits"]
 
diff --git a/edn/Cargo.toml b/edn/Cargo.toml
index 6f0c7f62..9147c71f 100644
--- a/edn/Cargo.toml
+++ b/edn/Cargo.toml
@@ -12,11 +12,11 @@ readme = "./README.md"
 
 [dependencies]
 chrono = "0.3"
-itertools = "0.5.9"
-num = "0.1.35"
-ordered-float = "0.4.0"
-pretty = "0.2.0"
-uuid = "0.5.0"
+itertools = "0.5"
+num = "0.1"
+ordered-float = "0.4"
+pretty = "0.2"
+uuid = "0.5"
 
 [build-dependencies]
-peg = "0.5.1"
+peg = "0.5"
diff --git a/query-projector/Cargo.toml b/query-projector/Cargo.toml
index 0bd54f1f..7b1f45e3 100644
--- a/query-projector/Cargo.toml
+++ b/query-projector/Cargo.toml
@@ -7,7 +7,7 @@ workspace = ".."
 error-chain = "0.8.1"
 
 [dependencies.rusqlite]
-version = "0.10.1"
+version = "0.11"
 # System sqlite might be very old.
 features = ["bundled", "limits"]
 
diff --git a/sql/Cargo.toml b/sql/Cargo.toml
index abca4fa2..e4e2420d 100644
--- a/sql/Cargo.toml
+++ b/sql/Cargo.toml
@@ -8,7 +8,7 @@ error-chain = "0.8.1"
 ordered-float = "0.4.0"
 
 [dependencies.rusqlite]
-version = "0.10.1"
+version = "0.11"
 # System sqlite might be very old.
 features = ["bundled", "limits"]
 
diff --git a/src/lib.rs b/src/lib.rs
index c9686a86..76762777 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,12 +11,6 @@
 #[macro_use]
 extern crate error_chain;
 
-#[macro_use]
-extern crate slog;
-
-#[macro_use]
-extern crate slog_scope;
-
 extern crate rusqlite;
 
 extern crate edn;
@@ -38,7 +32,6 @@ pub mod conn;
 pub mod query;
 
 pub fn get_name() -> String {
-    info!("Called into mentat library"; "fn" => "get_name");
     return String::from("mentat");
 }
 
diff --git a/src/main.rs b/src/main.rs
index a0fc6447..ca1e2e02 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,16 +13,9 @@ extern crate clap;
 
 use nickel::{Nickel, HttpRouter};
 
-#[macro_use]
-extern crate slog;
-#[macro_use]
-extern crate slog_scope;
-extern crate slog_term;
-
 extern crate mentat;
 
 use clap::{App, Arg, SubCommand, AppSettings};
-use slog::DrainExt;
 
 use std::u16;
 use std::str::FromStr;
@@ -59,23 +52,6 @@ fn main() {
                      matches.value_of("port").unwrap());
         }
 
-        // Set up logging.
-        let log_level = if debug {
-            slog::Level::Debug
-        } else {
-            slog::Level::Warning
-        };
-        let term_logger = slog_term::streamer().build().fuse();
-        let log = slog::Logger::root(slog::LevelFilter::new(term_logger, log_level),
-                                     o!("version" => env!("CARGO_PKG_VERSION")));
-        slog_scope::set_global_logger(log);
-
-        info!("Serving database"; "database" => matches.value_of("database").unwrap(),
-                                  "port" => port,
-                                  "debug mode" => debug);
-
-        error!("Calling a function: {}", mentat::get_name());
-
         let mut server = Nickel::new();
         server.get("/", middleware!("This doesn't do anything yet"));
         server.listen(("127.0.0.1", port)).expect("Failed to launch server");