diff --git a/.circleci/config.yml b/.circleci/config.yml
index 498abbe0b..07e004364 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -474,6 +474,9 @@ jobs:
             cd $HOME/emsdk
             git reset --hard
             git pull
+            # FIXME(ilammy, 2020-07-07): unpin emsdk version [T1698]
+            # Latest HEAD has a regression, we roll back to last good version.
+            git checkout 92d512faa832b3ff5d6b8bc991b6801e31d8e372
             # FIXME(ilammy, 2020-06-07): migrate to "upstream" flavor
             # LLVM flavor of Emscripten has some issues compiling our code,
             # and latest versions of the fastcomp flavor started giving out
@@ -629,6 +632,9 @@ jobs:
             cd $HOME/emsdk
             git reset --hard
             git pull
+            # FIXME(ilammy, 2020-07-07): unpin emsdk version [T1698]
+            # Latest HEAD has a regression, we roll back to last good version.
+            git checkout 92d512faa832b3ff5d6b8bc991b6801e31d8e372
             # FIXME(ilammy, 2020-06-07): migrate to "upstream" flavor
             # LLVM flavor of Emscripten has some issues compiling our code,
             # and latest versions of the fastcomp flavor started giving out
diff --git a/.github/workflows/integration.yaml b/.github/workflows/integration.yaml
index 8ae42e267..af1f57e30 100644
--- a/.github/workflows/integration.yaml
+++ b/.github/workflows/integration.yaml
@@ -75,6 +75,9 @@ jobs:
           cd $HOME
           git clone https://github.com/emscripten-core/emsdk.git
           cd $HOME/emsdk
+          # FIXME(ilammy, 2020-07-07): unpin emsdk version [T1698]
+          # Latest HEAD has a regression, we roll back to last good version.
+          git checkout 92d512faa832b3ff5d6b8bc991b6801e31d8e372
           # FIXME(ilammy, 2020-06-07): migrate to "upstream" flavor
           # LLVM flavor of Emscripten has some issues compiling our code,
           # and latest versions of the fastcomp flavor started giving out
diff --git a/.github/workflows/test-wasm.yaml b/.github/workflows/test-wasm.yaml
index 027baf32c..73a0966a5 100644
--- a/.github/workflows/test-wasm.yaml
+++ b/.github/workflows/test-wasm.yaml
@@ -58,6 +58,9 @@ jobs:
           cd $HOME
           git clone https://github.com/emscripten-core/emsdk.git
           cd $HOME/emsdk
+          # FIXME(ilammy, 2020-07-07): unpin emsdk version [T1698]
+          # Latest HEAD has a regression, we roll back to last good version.
+          git checkout 92d512faa832b3ff5d6b8bc991b6801e31d8e372
           # FIXME(ilammy, 2020-06-07): migrate to "upstream" flavor
           # LLVM flavor of Emscripten has some issues compiling our code,
           # and latest versions of the fastcomp flavor started giving out