diff --git a/lib/wasm/Cargo.toml b/lib/wasm/Cargo.toml
index 2aa984d720..56d49d7cf6 100644
--- a/lib/wasm/Cargo.toml
+++ b/lib/wasm/Cargo.toml
@@ -11,7 +11,7 @@ license = "Apache-2.0"
 name = "cton_wasm"
 
 [dependencies]
-wasmparser = "0.13.0"
+wasmparser = "0.14.1"
 cretonne = { path = "../cretonne" }
 cretonne-frontend = { path = "../frontend" }
 
diff --git a/lib/wasm/src/code_translator.rs b/lib/wasm/src/code_translator.rs
index 1e65f2e607..903b9cd9e1 100644
--- a/lib/wasm/src/code_translator.rs
+++ b/lib/wasm/src/code_translator.rs
@@ -618,6 +618,13 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
             let val = state.pop1();
             state.push1(builder.ins().bitcast(I64, val));
         }
+        Operator::I32Extend8S |
+        Operator::I32Extend16S |
+        Operator::I64Extend8S |
+        Operator::I64Extend16S |
+        Operator::I64Extend32S => {
+            panic!("proposed sign-extend operators not yet supported");
+        }
         /****************************** Binary Operators ************************************/
         Operator::I32Add | Operator::I64Add => {
             let (arg1, arg2) = state.pop2();
@@ -814,6 +821,74 @@ pub fn translate_operator<FE: FuncEnvironment + ?Sized>(
             let val = builder.ins().fcmp(FloatCC::LessThanOrEqual, arg1, arg2);
             state.push1(builder.ins().bint(I32, val));
         }
+        Operator::Wake { .. } |
+        Operator::I32Wait { .. } |
+        Operator::I64Wait { .. } |
+        Operator::I32AtomicLoad { .. } |
+        Operator::I64AtomicLoad { .. } |
+        Operator::I32AtomicLoad8U { .. } |
+        Operator::I32AtomicLoad16U { .. } |
+        Operator::I64AtomicLoad8U { .. } |
+        Operator::I64AtomicLoad16U { .. } |
+        Operator::I64AtomicLoad32U { .. } |
+        Operator::I32AtomicStore { .. } |
+        Operator::I64AtomicStore { .. } |
+        Operator::I32AtomicStore8 { .. } |
+        Operator::I32AtomicStore16 { .. } |
+        Operator::I64AtomicStore8 { .. } |
+        Operator::I64AtomicStore16 { .. } |
+        Operator::I64AtomicStore32 { .. } |
+        Operator::I32AtomicRmwAdd { .. } |
+        Operator::I64AtomicRmwAdd { .. } |
+        Operator::I32AtomicRmw8UAdd { .. } |
+        Operator::I32AtomicRmw16UAdd { .. } |
+        Operator::I64AtomicRmw8UAdd { .. } |
+        Operator::I64AtomicRmw16UAdd { .. } |
+        Operator::I64AtomicRmw32UAdd { .. } |
+        Operator::I32AtomicRmwSub { .. } |
+        Operator::I64AtomicRmwSub { .. } |
+        Operator::I32AtomicRmw8USub { .. } |
+        Operator::I32AtomicRmw16USub { .. } |
+        Operator::I64AtomicRmw8USub { .. } |
+        Operator::I64AtomicRmw16USub { .. } |
+        Operator::I64AtomicRmw32USub { .. } |
+        Operator::I32AtomicRmwAnd { .. } |
+        Operator::I64AtomicRmwAnd { .. } |
+        Operator::I32AtomicRmw8UAnd { .. } |
+        Operator::I32AtomicRmw16UAnd { .. } |
+        Operator::I64AtomicRmw8UAnd { .. } |
+        Operator::I64AtomicRmw16UAnd { .. } |
+        Operator::I64AtomicRmw32UAnd { .. } |
+        Operator::I32AtomicRmwOr { .. } |
+        Operator::I64AtomicRmwOr { .. } |
+        Operator::I32AtomicRmw8UOr { .. } |
+        Operator::I32AtomicRmw16UOr { .. } |
+        Operator::I64AtomicRmw8UOr { .. } |
+        Operator::I64AtomicRmw16UOr { .. } |
+        Operator::I64AtomicRmw32UOr { .. } |
+        Operator::I32AtomicRmwXor { .. } |
+        Operator::I64AtomicRmwXor { .. } |
+        Operator::I32AtomicRmw8UXor { .. } |
+        Operator::I32AtomicRmw16UXor { .. } |
+        Operator::I64AtomicRmw8UXor { .. } |
+        Operator::I64AtomicRmw16UXor { .. } |
+        Operator::I64AtomicRmw32UXor { .. } |
+        Operator::I32AtomicRmwXchg { .. } |
+        Operator::I64AtomicRmwXchg { .. } |
+        Operator::I32AtomicRmw8UXchg { .. } |
+        Operator::I32AtomicRmw16UXchg { .. } |
+        Operator::I64AtomicRmw8UXchg { .. } |
+        Operator::I64AtomicRmw16UXchg { .. } |
+        Operator::I64AtomicRmw32UXchg { .. } |
+        Operator::I32AtomicRmwCmpxchg { .. } |
+        Operator::I64AtomicRmwCmpxchg { .. } |
+        Operator::I32AtomicRmw8UCmpxchg { .. } |
+        Operator::I32AtomicRmw16UCmpxchg { .. } |
+        Operator::I64AtomicRmw8UCmpxchg { .. } |
+        Operator::I64AtomicRmw16UCmpxchg { .. } |
+        Operator::I64AtomicRmw32UCmpxchg { .. } => {
+            panic!("proposed thread operators not yet supported");
+        }
     }
 }
 
diff --git a/lib/wasm/src/sections_translator.rs b/lib/wasm/src/sections_translator.rs
index 21f5abbdb5..d02a4a7c2a 100644
--- a/lib/wasm/src/sections_translator.rs
+++ b/lib/wasm/src/sections_translator.rs
@@ -75,11 +75,16 @@ pub fn parse_import_section<'data>(
                 environ.declare_func_import(sig as SignatureIndex, module_name, field_name);
             }
             ParserState::ImportSectionEntry {
-                ty: ImportSectionEntryType::Memory(MemoryType { limits: ref memlimits }), ..
+                ty: ImportSectionEntryType::Memory(MemoryType {
+                                                   limits: ref memlimits,
+                                                   shared,
+                                               }),
+                ..
             } => {
                 environ.declare_memory(Memory {
                     pages_count: memlimits.initial as usize,
                     maximum: memlimits.maximum.map(|x| x as usize),
+                    shared,
                 });
             }
             ParserState::ImportSectionEntry {
@@ -186,6 +191,7 @@ pub fn parse_memory_section(
                 environ.declare_memory(Memory {
                     pages_count: ty.limits.initial as usize,
                     maximum: ty.limits.maximum.map(|x| x as usize),
+                    shared: ty.shared,
                 });
             }
             ParserState::EndSection => break,
diff --git a/lib/wasm/src/translation_utils.rs b/lib/wasm/src/translation_utils.rs
index 8b1bc5fac2..4c70d708ed 100644
--- a/lib/wasm/src/translation_utils.rs
+++ b/lib/wasm/src/translation_utils.rs
@@ -67,6 +67,8 @@ pub struct Memory {
     pub pages_count: usize,
     /// The maximum number of pages in the memory.
     pub maximum: Option<usize>,
+    /// Whether the memory may be shared between multiple threads.
+    pub shared: bool,
 }
 
 /// Wrapper to a `get_local` and `set_local` index. They are WebAssembly's non-SSA variables.