diff --git a/docs/options.md b/docs/options.md
index c4dc99a4..132eecc3 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -494,23 +494,23 @@ Platform-specific environment variables are also available:<br/>
 
     ```yaml
     # Set some compiler flags
-    CIBW_ENVIRONMENT: "CFLAGS='-g -Wall' CXXFLAGS='-Wall'"
+    CIBW_ENVIRONMENT: CFLAGS='-g -Wall' CXXFLAGS='-Wall'
 
     # Append a directory to the PATH variable (this is expanded in the build environment)
-    CIBW_ENVIRONMENT: "PATH=$PATH:/usr/local/bin"
+    CIBW_ENVIRONMENT: PATH=$PATH:/usr/local/bin
 
     # Prepend a directory containing spaces on Windows.
     CIBW_ENVIRONMENT_WINDOWS: >-
       PATH="C:\\Program Files\\PostgreSQL\\13\\bin;$PATH"
 
     # Set BUILD_TIME to the output of the `date` command
-    CIBW_ENVIRONMENT: "BUILD_TIME=$(date)"
+    CIBW_ENVIRONMENT: BUILD_TIME=$(date)
 
     # Supply options to `pip` to affect how it downloads dependencies
-    CIBW_ENVIRONMENT: "PIP_EXTRA_INDEX_URL=https://pypi.myorg.com/simple"
+    CIBW_ENVIRONMENT: PIP_EXTRA_INDEX_URL=https://pypi.myorg.com/simple
 
     # Set two flags on linux only
-    CIBW_ENVIRONMENT_LINUX: "BUILD_TIME=$(date) SAMPLE_TEXT=\"sample text\""
+    CIBW_ENVIRONMENT_LINUX: BUILD_TIME=$(date) SAMPLE_TEXT="sample text"
     ```
 
     Separate multiple values with a space.